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19643 commits
Author | SHA1 | Message | Date | |
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Dave Martin | 739c976579 |
x86/resctrl: Don't try to free nonexistent RMIDs
Commit |
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Yazen Ghannam | c625dabbf1 |
x86/amd_nb: Check for invalid SMN reads
AMD Zen-based systems use a System Management Network (SMN) that
provides access to implementation-specific registers.
SMN accesses are done indirectly through an index/data pair in PCI
config space. The PCI config access may fail and return an error code.
This would prevent the "read" value from being updated.
However, the PCI config access may succeed, but the return value may be
invalid. This is in similar fashion to PCI bad reads, i.e. return all
bits set.
Most systems will return 0 for SMN addresses that are not accessible.
This is in line with AMD convention that unavailable registers are
Read-as-Zero/Writes-Ignored.
However, some systems will return a "PCI Error Response" instead. This
value, along with an error code of 0 from the PCI config access, will
confuse callers of the amd_smn_read() function.
Check for this condition, clear the return value, and set a proper error
code.
Fixes:
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David Kaplan | 93c1800b37 |
x86/kexec: Fix bug with call depth tracking
The call to cc_platform_has() triggers a fault and system crash if call depth
tracking is active because the GS segment has been reset by load_segments() and
GS_BASE is now 0 but call depth tracking uses per-CPU variables to operate.
Call cc_platform_has() earlier in the function when GS is still valid.
[ bp: Massage. ]
Fixes:
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Linus Torvalds | a693b9c95a |
Miscellaneous topology parsing fixes:
- Fix topology parsing regression on older CPUs in the new AMD/Hygon parser - Fix boot crash on odd Intel Quark and similar CPUs that do not fill out cpuinfo_x86::x86_clflush_size and zero out cpuinfo_x86::x86_cache_alignment as a result. Provide 32 bytes as a general fallback value. - Fix topology enumeration on certain rare CPUs where the BIOS locks certain CPUID leaves and the kernel unlocked them late, which broke with the new topology parsing code. Factor out this unlocking logic and move it earlier in the parsing sequence. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZcHdcRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1i5tQ/9G1ckVgGEKvDPwGcUi9Db9+2UzsWfB0og kUYgBJDq/sp0ZXPj/RB3M9h3YKmmsOuL4ZUJz3hrqQt1MqEx7eVNUbFuFRoE2ojx MimGI/L1pvBrJb9grpULrMX8aDND6hC1OQYOrUEN/yOTPxth77fGJIhcc/plSbAZ po1S12uOONxX1EvKlS/B0k6zYqBUWYTzkMog/YSa/TjXez9A/yJqt5dcNAyEdSrq EbjSF/7warhFGmiuFDC2z8rvnrwZ/qT5cOlkHkHs8JSigDchYT/gctWv2bQPCavS Nw/Aoue7TfxYu9F2H0PaqcA3efSNKmfcuozX0PNLswMGrBc4HoVoVdu3ldigOPhm lj4M0zEPkzRFuGvrBdsbm+oewzDOK+jr+QYyy0R+HU48vz0RpoVKpWfOqI9fjfQt 9m2nuKLLd4mOEwnRLtCdfQzggksIJoV0soHH6yR+32cqqb9t82tICF5caPsdQYzE /zH/onXkaiz5Rn4vL7em7vcAE1RvL97b8iU435Hnta6Lboi3FxJepxGt5ZRsGCZQ ukV5iEAkRQRNjrvaC2QT8jNmBQ0f73UBixn0iB7CKtGReteP3gn4svHfvkhVlZVN Qpw2HvCm+LlpX7+U8EvzzqETNg5CYY46pE4nUNsHr+/zQEFFOER6MNW5rJDDMWAl QdVvI4HhS8Y= =ugOt -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Miscellaneous topology parsing fixes: - Fix topology parsing regression on older CPUs in the new AMD/Hygon parser - Fix boot crash on odd Intel Quark and similar CPUs that do not fill out cpuinfo_x86::x86_clflush_size and zero out cpuinfo_x86::x86_cache_alignment as a result. Provide 32 bytes as a general fallback value. - Fix topology enumeration on certain rare CPUs where the BIOS locks certain CPUID leaves and the kernel unlocked them late, which broke with the new topology parsing code. Factor out this unlocking logic and move it earlier in the parsing sequence" * tag 'x86-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/topology/intel: Unlock CPUID before evaluating anything x86/cpu: Provide default cache line size if not enumerated x86/topology/amd: Evaluate SMT in CPUID leaf 0x8000001e only on family 0x17 and greater |
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Linus Torvalds | 3fca58ffad |
Export a symbol to make life easier for instrumentation/debugging.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZcGuARHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iDJw//YwjUCBQTmzKDgahXy8I1BX4ndcIrS/FW eSUN/17zYac9sDe3db6Exr+PddoLYIc2vtQ3AQFtuZrYEhGoItNVIoDedwrSvDeC NHOUKTgI6vO/eGCINUVotvA1Rzgcl7Bq04YPGXmIzMyNCsVlbBzo/vW4OiNNHaSw iP0cI6D/dHcWr94uYN9vnBO1G/A0ixDhM3KiZCJwib5rw60rDeoerdScH34IRPlE Wfn6jFD6b6Z5fUjPvbizzD8T+MI85AIasznB9TnkJOuKlKW0pVJNU9HVqmEvV/Yd JTtDUekM5SNuL5PFyn0pkVq3ZYIxeY0LU7afFVFwgZ4t4VwQVeyobvjX7a2S2r3l alCFaFE2j/CHcUYyAmXPON8tcN98pupSnPSsv2oYKErUrEFFLEwTKdQMzNn5Jfqz fWAwD4h+WH+2y9HZYs0I34a2ssbcU3l5TdDFPHpNxa4Zmt0eQxN7ihelDWKECZTk 7oH+lZYoHySG4KxL2ppMRAcHOKDB61UJnlQvGVYl6QpnrrnxmR0kwkP+OQZPQVhH DEgues/lGYqqyLOIZnq+2ciTjSmRQCkhfRdSC+btiMx6hXuBVhlUOW4YZoRyPUwp 31I/XAOchcqee1Wt4+Z1dqhDDtRAzmau04xXZtq5GkgGjavpSbzAFCRCpfhCh2xh plMLErWFk5E= =tTwc -----END PGP SIGNATURE----- Merge tag 'sched-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "Export a symbol to make life easier for instrumentation/debugging" * tag 'sched-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/x86: Export 'percpu arch_freq_scale' |
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Thomas Gleixner | 0c2f6d0461 |
x86/topology/intel: Unlock CPUID before evaluating anything
Intel CPUs have a MSR bit to limit CPUID enumeration to leaf two. If
this bit is set by the BIOS then CPUID evaluation including topology
enumeration does not work correctly as the evaluation code does not try
to analyze any leaf greater than two.
This went unnoticed before because the original topology code just
repeated evaluation several times and managed to overwrite the initial
limited information with the correct one later. The new evaluation code
does it once and therefore ends up with the limited and wrong
information.
Cure this by unlocking CPUID right before evaluating anything which
depends on the maximum CPUID leaf being greater than two instead of
rereading stuff after unlock.
Fixes:
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Phil Auld | d40605a682 |
sched/x86: Export 'percpu arch_freq_scale'
Commit:
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Dave Hansen | 2a38e4ca30 |
x86/cpu: Provide default cache line size if not enumerated
tl;dr: CPUs with CPUID.80000008H but without CPUID.01H:EDX[CLFSH]
will end up reporting cache_line_size()==0 and bad things happen.
Fill in a default on those to avoid the problem.
Long Story:
The kernel dies a horrible death if c->x86_cache_alignment (aka.
cache_line_size() is 0. Normally, this value is populated from
c->x86_clflush_size.
Right now the code is set up to get c->x86_clflush_size from two
places. First, modern CPUs get it from CPUID. Old CPUs that don't
have leaf 0x80000008 (or CPUID at all) just get some sane defaults
from the kernel in get_cpu_address_sizes().
The vast majority of CPUs that have leaf 0x80000008 also get
->x86_clflush_size from CPUID. But there are oddballs.
Intel Quark CPUs[1] and others[2] have leaf 0x80000008 but don't set
CPUID.01H:EDX[CLFSH], so they skip over filling in ->x86_clflush_size:
cpuid(0x00000001, &tfms, &misc, &junk, &cap0);
if (cap0 & (1<<19))
c->x86_clflush_size = ((misc >> 8) & 0xff) * 8;
So they: land in get_cpu_address_sizes() and see that CPUID has level
0x80000008 and jump into the side of the if() that does not fill in
c->x86_clflush_size. That assigns a 0 to c->x86_cache_alignment, and
hilarity ensues in code like:
buffer = kzalloc(ALIGN(sizeof(*buffer), cache_line_size()),
GFP_KERNEL);
To fix this, always provide a sane value for ->x86_clflush_size.
Big thanks to Andy Shevchenko for finding and reporting this and also
providing a first pass at a fix. But his fix was only partial and only
worked on the Quark CPUs. It would not, for instance, have worked on
the QEMU config.
1. https://raw.githubusercontent.com/InstLatx64/InstLatx64/master/GenuineIntel/GenuineIntel0000590_Clanton_03_CPUID.txt
2. You can also get this behavior if you use "-cpu 486,+clzero"
in QEMU.
[ dhansen: remove 'vp_bits_from_cpuid' reference in changelog
because bpetkov brutally murdered it recently. ]
Fixes:
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Thomas Gleixner | 34bf6bae32 |
x86/topology/amd: Evaluate SMT in CPUID leaf 0x8000001e only on family 0x17 and greater
The new AMD/HYGON topology parser evaluates the SMT information in CPUID leaf
0x8000001e unconditionally while the original code restricted it to CPUs with
family 0x17 and greater.
This breaks family 0x15 CPUs which advertise that leaf and have a non-zero
value in the SMT section. The machine boots, but the scheduler complains loudly
about the mismatch of the core IDs:
WARNING: CPU: 1 PID: 0 at kernel/sched/core.c:6482 sched_cpu_starting+0x183/0x250
WARNING: CPU: 0 PID: 1 at kernel/sched/topology.c:2408 build_sched_domains+0x76b/0x12b0
Add the condition back to cure it.
[ bp: Make it actually build because grandpa is not concerned with
trivial stuff. :-P ]
Fixes:
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Linus Torvalds | a0db36ed57 |
Misc fixes:
- Fix x86 IRQ vector leak caused by a CPU offlining race - Fix build failure in the riscv-imsic irqchip driver caused by an API-change semantic conflict - Fix use-after-free in irq_find_at_or_after() Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZRwMURHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1h/zQ//TTrgyXi6+1xXY4R0LDU45j+wavMTMkq3 kM3eUeyXgy+FDtvLRVaYgEAYbtuR4LGFN9qmVuEHJPZQwpi3AFlnGFUFjFUvyE43 xJuOtHoxFv3mj09VgRGsjZvzp8bxYSkEn3h0ryTWGUHzR+QmoQmYWrU6HExgXw3R +s8pvi14g6R/+PAy05cF0k1J7aeSsYaOfd38D/XnpyhuhXvPMS2eHgovV6I5Qhk4 5lV6rzJv8XlKxVr7bOYJkRePE3z0HMtx0G7eo8eYERBQapHede18V8imv4OpUiua vmG8cFhF4Lq9KFdEtiVuf1X9/XH3PoEKTGA81oqQ9lLN9USx7ME/Peg6U5ezvEkp YmQx2LS12DWqYp5PZQTN0CHnfmMLgksmyGELM3JE/dFFCVh4HdpMrh+2wLwWGRJ3 JLzAJh3YwcPhayLpNVgsSF9AtLKTkDoS0bHd43mHnB6VaEKkus8zbeuCxYAsUeMJ 5wCZw3xQjTZEaMMNd1hJN5O/9TX2of+T6Z4C4cacMBmwpD7vX5oXmDYLE/wUHw6m 9Z67fvOvTdIf3MkYSqjGXFKD1JobL/PmwCfaaGUQFVJkbX5WVNDk6C1zgs5FhmuY U/AcYfadbNdLVXrN3VLnX6Gmb7gFPShOAE1GgXGeszSReI4pbOUy2zopRGAEWSZS fRu8nyveGjw= =vxJh -----END PGP SIGNATURE----- Merge tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Ingo Molnar: - Fix x86 IRQ vector leak caused by a CPU offlining race - Fix build failure in the riscv-imsic irqchip driver caused by an API-change semantic conflict - Fix use-after-free in irq_find_at_or_after() * tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after() genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline irqchip/riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict |
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Linus Torvalds | 3a390f24b7 |
Miscellaneous fixes:
- Fix regressions of the new x86 CPU VFM (vendor/family/model) enumeration/matching code - Fix crash kernel detection on buggy firmware with non-compliant ACPI MADT tables - Address Kconfig warning Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZRvZwRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iDhg//fWdgn2x4B4hEiCQQVYGpHLua59jduucb oh+NF1jGu75obRu3gdQJLR7OYjxntWf2ryxpS+kkyLP6sYeMAoL4vnIoi5XJGJ13 VG0BcbXA8asL2KEfVz66AENAGQjAGr7Bcg9urHIuw8Nz6lJqaFyQkdQJfeClWtdL zkgnCdooP1eREgfrQH5+hhTCrr/GwiFUU+wNKeIIpis1enMZYMiqA5U23w3DKlP8 Jx0cRY7ysa63O/H9oD01edRPkZpfbMqAocVwc9v42zOjlJLZYAtAW4mSC+GhG9X6 iGFWiW1ROBte/HYLE1LdKfahO990Tw0GsIcS42E8AtYfVu/W7U525SyKG100ndYH nVoUSOPWF8YCT810YtOEM2ueMQKZMEjB8yAp5QQIi2NMcgkFxNdVQiC8zFATisHd KFdEkH2fDGW9YiUNRBYjI/da3Q2v83JwAIKnYXmoFjcru4iJOPDIFdGZcJDh7oNW ys/SWSK5dJkbLz+cHm8E5ceLTpZTsFHJm1Vd1W2gU/jkESBW/2i1rZ757ykfHURe N7JUPI4g0DOVj8Elket9gnKD/xVFg/lsTnA1/5wxdWhWhJzZcM/XyICATno1/BaY STWUmUr6sTsoB4+2PRuFC2zaRqIstLbkmKOAlHezd4uIwFxznQAg1K8f8kHlqfLH l3VA8nRbOFc= =nIcm -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: - Fix regressions of the new x86 CPU VFM (vendor/family/model) enumeration/matching code - Fix crash kernel detection on buggy firmware with non-compliant ACPI MADT tables - Address Kconfig warning * tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL crypto: x86/aes-xts - switch to new Intel CPU model defines x86/topology: Handle bogus ACPI tables correctly x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y |
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Dongli Zhang | a6c11c0a52 |
genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline
The absence of IRQD_MOVE_PCNTXT prevents immediate effectiveness of
interrupt affinity reconfiguration via procfs. Instead, the change is
deferred until the next instance of the interrupt being triggered on the
original CPU.
When the interrupt next triggers on the original CPU, the new affinity is
enforced within __irq_move_irq(). A vector is allocated from the new CPU,
but the old vector on the original CPU remains and is not immediately
reclaimed. Instead, apicd->move_in_progress is flagged, and the reclaiming
process is delayed until the next trigger of the interrupt on the new CPU.
Upon the subsequent triggering of the interrupt on the new CPU,
irq_complete_move() adds a task to the old CPU's vector_cleanup list if it
remains online. Subsequently, the timer on the old CPU iterates over its
vector_cleanup list, reclaiming old vectors.
However, a rare scenario arises if the old CPU is outgoing before the
interrupt triggers again on the new CPU.
In that case irq_force_complete_move() is not invoked on the outgoing CPU
to reclaim the old apicd->prev_vector because the interrupt isn't currently
affine to the outgoing CPU, and irq_needs_fixup() returns false. Even
though __vector_schedule_cleanup() is later called on the new CPU, it
doesn't reclaim apicd->prev_vector; instead, it simply resets both
apicd->move_in_progress and apicd->prev_vector to 0.
As a result, the vector remains unreclaimed in vector_matrix, leading to a
CPU vector leak.
To address this issue, move the invocation of irq_force_complete_move()
before the irq_needs_fixup() call to reclaim apicd->prev_vector, if the
interrupt is currently or used to be affine to the outgoing CPU.
Additionally, reclaim the vector in __vector_schedule_cleanup() as well,
following a warning message, although theoretically it should never see
apicd->move_in_progress with apicd->prev_cpu pointing to an offline CPU.
Fixes:
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Tony Luck | 93022482b2 |
x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL
Code in v6.9 arch/x86/kernel/smpboot.c was changed by commit |
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Linus Torvalds | f0bae243b2 |
pci-v6.10-changes
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmZLzNIUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vwr/Q//STe2XGKI8bAKqP2wbbkzm+ISnK4A Lqf3FEAIXunxDRspszfXKKV2p4vaIkmOFiwIdtp/kWvd0DQn5+ATXJ/iQtp8aFX/ R+6BQ7EZc2G7fN5fbQuK54+CvmWEpkKEMbXYbd6ivQ14Cijdb3Nbu+w+DYFjS+6C k2a9lS1bTW7Xcy0fyiO1w6GQiWqtmOH8U3OlQtIrI0EVkDG9OG1LsLuc92/FgkOo REN+sU+hX1K5fHrvm2CtjYDn/9/B6bJ/It22H1dPgUL9nKvKC67fYzosMtUCOX1M 6XSPjZIuXOmQGeZXHhpSlVwaidxoUjYO98I7nMquxKdCy6yct3geK7ULG/xeQCgD ML7MGQB4+sTiSWalXUQaziKqF1FIDEvU3HMGXFWnoBL5l56eRp8KS1EI9Eqk9pU3 pk9fJaCkcFnkzPtMFzqPOm5q9zUZ6bGbfYb0hs72TUKplmVDhFo2T1YsW2AOyHZ7 mjuDzUYZX0H7uM1tntA56IgZX+oNOrLvhBt5L5M/BQeCsZFBBUfIcAEaYoL9LwXO AYgIG3jdqzHHyAUzutJF+XHKinJLMHm0XVYbFmO6saPhFzrUJSNHqT7NzW1DGGTl OnO8e1WNMX1EcnKvnc6fXyGmM3SgVwy45FsbG/zRnhn4uBKqKtjrh6uX/myA22LK CSeqSUK9XmXxFNA= =xjoS -----END PGP SIGNATURE----- Merge tag 'pci-v6.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Skip E820 checks for MCFG ECAM regions for new (2016+) machines, since there's no requirement to describe them in E820 and some platforms require ECAM to work (Bjorn Helgaas) - Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX to be more specific (Damien Le Moal) - Remove last user and pci_enable_device_io() (Heiner Kallweit) - Wait for Link Training==0 to avoid possible race (Ilpo Järvinen) - Skip waiting for devices that have been disconnected while suspended (Ilpo Järvinen) - Clear Secondary Status errors after enumeration since Master Aborts and Unsupported Request errors are an expected part of enumeration (Vidya Sagar) MSI: - Remove unused IMS (Interrupt Message Store) support (Bjorn Helgaas) Error handling: - Mask Genesys GL975x SD host controller Replay Timer Timeout correctable errors caused by a hardware defect; the errors cause interrupts that prevent system suspend (Kai-Heng Feng) - Fix EDR-related _DSM support, which previously evaluated revision 5 but assumed revision 6 behavior (Kuppuswamy Sathyanarayanan) ASPM: - Simplify link state definitions and mask calculation (Ilpo Järvinen) Power management: - Avoid D3cold for HP Pavilion 17 PC/1972 PCIe Ports, where BIOS apparently doesn't know how to put them back in D0 (Mario Limonciello) CXL: - Support resetting CXL devices; special handling required because CXL Ports mask Secondary Bus Reset by default (Dave Jiang) DOE: - Support DOE Discovery Version 2 (Alexey Kardashevskiy) Endpoint framework: - Set endpoint BAR to be 64-bit if the driver says that's all the device supports, in addition to doing so if the size is >2GB (Niklas Cassel) - Simplify endpoint BAR allocation and setting interfaces (Niklas Cassel) Cadence PCIe controller driver: - Drop DT binding redundant msi-parent and pci-bus.yaml (Krzysztof Kozlowski) Cadence PCIe endpoint driver: - Configure endpoint BARs to be 64-bit based on the BAR type, not the BAR value (Niklas Cassel) Freescale Layerscape PCIe controller driver: - Convert DT binding to YAML (Frank Li) MediaTek MT7621 PCIe controller driver: - Add DT binding missing 'reg' property for child Root Ports (Krzysztof Kozlowski) - Fix theoretical string truncation in PHY name (Sergio Paracuellos) NVIDIA Tegra194 PCIe controller driver: - Return success for endpoint probe instead of falling through to the failure path (Vidya Sagar) Renesas R-Car PCIe controller driver: - Add DT binding missing IOMMU properties (Geert Uytterhoeven) - Add DT binding R-Car V4H compatible for host and endpoint mode (Yoshihiro Shimoda) Rockchip PCIe controller driver: - Configure endpoint BARs to be 64-bit based on the BAR type, not the BAR value (Niklas Cassel) - Add DT binding missing maxItems to ep-gpios (Krzysztof Kozlowski) - Set the Subsystem Vendor ID, which was previously zero because it was masked incorrectly (Rick Wertenbroek) Synopsys DesignWare PCIe controller driver: - Restructure DBI register access to accommodate devices where this requires Refclk to be active (Manivannan Sadhasivam) - Remove the deinit() callback, which was only need by the pcie-rcar-gen4, and do it directly in that driver (Manivannan Sadhasivam) - Add dw_pcie_ep_cleanup() so drivers that support PERST# can clean up things like eDMA (Manivannan Sadhasivam) - Rename dw_pcie_ep_exit() to dw_pcie_ep_deinit() to make it parallel to dw_pcie_ep_init() (Manivannan Sadhasivam) - Rename dw_pcie_ep_init_complete() to dw_pcie_ep_init_registers() to reflect the actual functionality (Manivannan Sadhasivam) - Call dw_pcie_ep_init_registers() directly from all the glue drivers, not just those that require active Refclk from the host (Manivannan Sadhasivam) - Remove the "core_init_notifier" flag, which was an obscure way for glue drivers to indicate that they depend on Refclk from the host (Manivannan Sadhasivam) TI J721E PCIe driver: - Add DT binding J784S4 SoC Device ID (Siddharth Vadapalli) - Add DT binding J722S SoC support (Siddharth Vadapalli) TI Keystone PCIe controller driver: - Add DT binding missing num-viewport, phys and phy-name properties (Jan Kiszka) Miscellaneous: - Constify and annotate with __ro_after_init (Heiner Kallweit) - Convert DT bindings to YAML (Krzysztof Kozlowski) - Check for kcalloc() failure in of_pci_prop_intr_map() (Duoming Zhou)" * tag 'pci-v6.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (97 commits) PCI: Do not wait for disconnected devices when resuming x86/pci: Skip early E820 check for ECAM region PCI: Remove unused pci_enable_device_io() ata: pata_cs5520: Remove unnecessary call to pci_enable_device_io() PCI: Update pci_find_capability() stub return types PCI: Remove PCI_IRQ_LEGACY scsi: vmw_pvscsi: Do not use PCI_IRQ_LEGACY instead of PCI_IRQ_LEGACY scsi: pmcraid: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: mpt3sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: megaraid_sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: ipr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: hpsa: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: arcmsr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY wifi: rtw89: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY dt-bindings: PCI: rockchip,rk3399-pcie: Add missing maxItems to ep-gpios Revert "genirq/msi: Provide constants for PCI/IMS support" Revert "x86/apic/msi: Enable PCI/IMS" Revert "iommu/vt-d: Enable PCI/IMS" Revert "iommu/amd: Enable PCI/IMS" Revert "PCI/MSI: Provide IMS (Interrupt Message Store) support" ... |
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Thomas Gleixner | 9d22c96316 |
x86/topology: Handle bogus ACPI tables correctly
The ACPI specification clearly states how the processors should be
enumerated in the MADT:
"To ensure that the boot processor is supported post initialization,
two guidelines should be followed. The first is that OSPM should
initialize processors in the order that they appear in the MADT. The
second is that platform firmware should list the boot processor as the
first processor entry in the MADT.
...
Failure of OSPM implementations and platform firmware to abide by
these guidelines can result in both unpredictable and non optimal
platform operation."
The kernel relies on that ordering to detect the real BSP on crash kernels
which is important to avoid sending a INIT IPI to it as that would cause a
full machine reset.
On a Dell XPS 16 9640 the BIOS ignores this rule and enumerates the CPUs in
the wrong order. As a consequence the kernel falsely detects a crash kernel
and disables the corresponding CPU.
Prevent this by checking the IA32_APICBASE MSR for the BSP bit on the boot
CPU. If that bit is set, then the MADT based BSP detection can be safely
ignored. If the kernel detects a mismatch between the BSP bit and the first
enumerated MADT entry then emit a firmware bug message.
This obviously also has to be taken into account when the boot APIC ID and
the first enumerated APIC ID match. If the boot CPU does not have the BSP
bit set in the APICBASE MSR then there is no way for the boot CPU to
determine which of the CPUs is the real BSP. Sending an INIT to the real
BSP would reset the machine so the only sane way to deal with that is to
limit the number of CPUs to one and emit a corresponding warning message.
Fixes:
|
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Linus Torvalds | 41c14f1ac8 |
Miscellaneous fixes:
- Fix a NOP-patching bug that resulted in valid but suboptimal NOP sequences in certain cases. - Fix build warnings related to fall-through control flow Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZIb60RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1i+3A//UGWEycvDubOlFSakMy8Nyh4luUPvRhoX SLp/BVgASz8EgXwA8gb5fQILKHIW0HofsEm+IjC+crzy/Sm7HV/GFvG80H59YyKS wGnJq6f0HWy5Cm/7zrEgg13nh8jCwIp6sJ/dGgyvGqK7YPpH7dfHFJ9r3ZPY5AT3 xI1U+IhnWEY4yQLMKiIHONaomnTbyoXcKsr8lmshCw3qSgSF9177onD3DX/uQZ/L iO0T1wxRsD92BD2v2tZHJCjBAO/NtJiM2Up6SlZNCaBTDn0oEbUNzfNL+fGDad2X Y8TjWQWu7YPN7nXxVj52T0JG4C31A5gQsCQTNiGNKFN8CPuf9qulZSf65VEvGliR caYhnEp8wVDwHz0vxB9zVaHh5QVyET5JqmrDGBjjDV/N9s8lYMCaeKxnaeBRPDQZ dAFe1TjH9OfiA5PYQGut3ZrjUxqC+Gec3oD/ofhBQjjf8Hi5lWO/4+iXiXhh+UfK j6GVbXIQW9S81AKlGDMBQKqE541ibA3tzye+Hdj8fMeDqyXG8R2Movx6KRQVt0wD 5ctjWDQ4YBSdc8VOEOJj4WhZT1295ff/by7OTVLkW1IN7CbVMu72nyzG8QA8c9At 35TTEBz+bUipIxohHqhi5WrSLQBgSE/Ns0T6O+GBOXUAWAPIVicuGFatbVnKKTOI lJs5oHcSHHs= =ZH5x -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: - Fix a NOP-patching bug that resulted in valid but suboptimal NOP sequences in certain cases - Fix build warnings related to fall-through control flow * tag 'x86-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/alternatives: Use the correct length when optimizing NOPs x86/boot: Address clang -Wimplicit-fallthrough in vsprintf() x86/boot: Add a fallthrough annotation |
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Linus Torvalds | 61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable series include: - Lucas Stach has provided some page-mapping cleanup/consolidation/maintainability work in the series "mm/treewide: Remove pXd_huge() API". - In the series "Allow migrate on protnone reference with MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one test. - In their series "Memory allocation profiling" Kent Overstreet and Suren Baghdasaryan have contributed a means of determining (via /proc/allocinfo) whereabouts in the kernel memory is being allocated: number of calls and amount of memory. - Matthew Wilcox has provided the series "Various significant MM patches" which does a number of rather unrelated things, but in largely similar code sites. - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes Weiner has fixed the page allocator's handling of migratetype requests, with resulting improvements in compaction efficiency. - In the series "make the hugetlb migration strategy consistent" Baolin Wang has fixed a hugetlb migration issue, which should improve hugetlb allocation reliability. - Liu Shixin has hit an I/O meltdown caused by readahead in a memory-tight memcg. Addressed in the series "Fix I/O high when memory almost met memcg limit". - In the series "mm/filemap: optimize folio adding and splitting" Kairui Song has optimized pagecache insertion, yielding ~10% performance improvement in one test. - Baoquan He has cleaned up and consolidated the early zone initialization code in the series "mm/mm_init.c: refactor free_area_init_core()". - Baoquan has also redone some MM initializatio code in the series "mm/init: minor clean up and improvement". - MM helper cleanups from Christoph Hellwig in his series "remove follow_pfn". - More cleanups from Matthew Wilcox in the series "Various page->flags cleanups". - Vlastimil Babka has contributed maintainability improvements in the series "memcg_kmem hooks refactoring". - More folio conversions and cleanups in Matthew Wilcox's series "Convert huge_zero_page to huge_zero_folio" "khugepaged folio conversions" "Remove page_idle and page_young wrappers" "Use folio APIs in procfs" "Clean up __folio_put()" "Some cleanups for memory-failure" "Remove page_mapping()" "More folio compat code removal" - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb functions to work on folis". - Code consolidation and cleanup work related to GUP's handling of hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2". - Rick Edgecombe has developed some fixes to stack guard gaps in the series "Cover a guard gap corner case". - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series "mm/ksm: fix ksm exec support for prctl". - Baolin Wang has implemented NUMA balancing for multi-size THPs. This is a simple first-cut implementation for now. The series is "support multi-size THP numa balancing". - Cleanups to vma handling helper functions from Matthew Wilcox in the series "Unify vma_address and vma_pgoff_address". - Some selftests maintenance work from Dev Jain in the series "selftests/mm: mremap_test: Optimizations and style fixes". - Improvements to the swapping of multi-size THPs from Ryan Roberts in the series "Swap-out mTHP without splitting". - Kefeng Wang has significantly optimized the handling of arm64's permission page faults in the series "arch/mm/fault: accelerate pagefault when badaccess" "mm: remove arch's private VM_FAULT_BADMAP/BADACCESS" - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it GUP-fast". - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to use struct vm_fault". - selftests build fixes from John Hubbard in the series "Fix selftests/mm build without requiring "make headers"". - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes the initialization code so that migration between different memory types works as intended. - David Hildenbrand has improved follow_pte() and fixed an errant driver in the series "mm: follow_pte() improvements and acrn follow_pte() fixes". - David also did some cleanup work on large folio mapcounts in his series "mm: mapcount for large folios + page_mapcount() cleanups". - Folio conversions in KSM in Alex Shi's series "transfer page to folio in KSM". - Barry Song has added some sysfs stats for monitoring multi-size THP's in the series "mm: add per-order mTHP alloc and swpout counters". - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled and limit checking cleanups". - Matthew Wilcox has been looking at buffer_head code and found the documentation to be lacking. The series is "Improve buffer head documentation". - Multi-size THPs get more work, this time from Lance Yang. His series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes the freeing of these things. - Kemeng Shi has added more userspace-visible writeback instrumentation in the series "Improve visibility of writeback". - Kemeng Shi then sent some maintenance work on top in the series "Fix and cleanups to page-writeback". - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the series "Improve anon_vma scalability for anon VMAs". Intel's test bot reported an improbable 3x improvement in one test. - SeongJae Park adds some DAMON feature work in the series "mm/damon: add a DAMOS filter type for page granularity access recheck" "selftests/damon: add DAMOS quota goal test" - Also some maintenance work in the series "mm/damon/paddr: simplify page level access re-check for pageout" "mm/damon: misc fixes and improvements" - David Hildenbrand has disabled some known-to-fail selftests ni the series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL". - memcg metadata storage optimizations from Shakeel Butt in "memcg: reduce memory consumption by memcg stats". - DAX fixes and maintenance work from Vishal Verma in the series "dax/bus.c: Fixups for dax-bus locking". -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZkgQYwAKCRDdBJ7gKXxA jrdKAP9WVJdpEcXxpoub/vVE0UWGtffr8foifi9bCwrQrGh5mgEAx7Yf0+d/oBZB nvA4E0DcPrUAFy144FNM0NTCb7u9vAw= =V3R/ -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull mm updates from Andrew Morton: "The usual shower of singleton fixes and minor series all over MM, documented (hopefully adequately) in the respective changelogs. Notable series include: - Lucas Stach has provided some page-mapping cleanup/consolidation/ maintainability work in the series "mm/treewide: Remove pXd_huge() API". - In the series "Allow migrate on protnone reference with MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one test. - In their series "Memory allocation profiling" Kent Overstreet and Suren Baghdasaryan have contributed a means of determining (via /proc/allocinfo) whereabouts in the kernel memory is being allocated: number of calls and amount of memory. - Matthew Wilcox has provided the series "Various significant MM patches" which does a number of rather unrelated things, but in largely similar code sites. - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes Weiner has fixed the page allocator's handling of migratetype requests, with resulting improvements in compaction efficiency. - In the series "make the hugetlb migration strategy consistent" Baolin Wang has fixed a hugetlb migration issue, which should improve hugetlb allocation reliability. - Liu Shixin has hit an I/O meltdown caused by readahead in a memory-tight memcg. Addressed in the series "Fix I/O high when memory almost met memcg limit". - In the series "mm/filemap: optimize folio adding and splitting" Kairui Song has optimized pagecache insertion, yielding ~10% performance improvement in one test. - Baoquan He has cleaned up and consolidated the early zone initialization code in the series "mm/mm_init.c: refactor free_area_init_core()". - Baoquan has also redone some MM initializatio code in the series "mm/init: minor clean up and improvement". - MM helper cleanups from Christoph Hellwig in his series "remove follow_pfn". - More cleanups from Matthew Wilcox in the series "Various page->flags cleanups". - Vlastimil Babka has contributed maintainability improvements in the series "memcg_kmem hooks refactoring". - More folio conversions and cleanups in Matthew Wilcox's series: "Convert huge_zero_page to huge_zero_folio" "khugepaged folio conversions" "Remove page_idle and page_young wrappers" "Use folio APIs in procfs" "Clean up __folio_put()" "Some cleanups for memory-failure" "Remove page_mapping()" "More folio compat code removal" - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb functions to work on folis". - Code consolidation and cleanup work related to GUP's handling of hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2". - Rick Edgecombe has developed some fixes to stack guard gaps in the series "Cover a guard gap corner case". - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series "mm/ksm: fix ksm exec support for prctl". - Baolin Wang has implemented NUMA balancing for multi-size THPs. This is a simple first-cut implementation for now. The series is "support multi-size THP numa balancing". - Cleanups to vma handling helper functions from Matthew Wilcox in the series "Unify vma_address and vma_pgoff_address". - Some selftests maintenance work from Dev Jain in the series "selftests/mm: mremap_test: Optimizations and style fixes". - Improvements to the swapping of multi-size THPs from Ryan Roberts in the series "Swap-out mTHP without splitting". - Kefeng Wang has significantly optimized the handling of arm64's permission page faults in the series "arch/mm/fault: accelerate pagefault when badaccess" "mm: remove arch's private VM_FAULT_BADMAP/BADACCESS" - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it GUP-fast". - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to use struct vm_fault". - selftests build fixes from John Hubbard in the series "Fix selftests/mm build without requiring "make headers"". - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes the initialization code so that migration between different memory types works as intended. - David Hildenbrand has improved follow_pte() and fixed an errant driver in the series "mm: follow_pte() improvements and acrn follow_pte() fixes". - David also did some cleanup work on large folio mapcounts in his series "mm: mapcount for large folios + page_mapcount() cleanups". - Folio conversions in KSM in Alex Shi's series "transfer page to folio in KSM". - Barry Song has added some sysfs stats for monitoring multi-size THP's in the series "mm: add per-order mTHP alloc and swpout counters". - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled and limit checking cleanups". - Matthew Wilcox has been looking at buffer_head code and found the documentation to be lacking. The series is "Improve buffer head documentation". - Multi-size THPs get more work, this time from Lance Yang. His series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes the freeing of these things. - Kemeng Shi has added more userspace-visible writeback instrumentation in the series "Improve visibility of writeback". - Kemeng Shi then sent some maintenance work on top in the series "Fix and cleanups to page-writeback". - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the series "Improve anon_vma scalability for anon VMAs". Intel's test bot reported an improbable 3x improvement in one test. - SeongJae Park adds some DAMON feature work in the series "mm/damon: add a DAMOS filter type for page granularity access recheck" "selftests/damon: add DAMOS quota goal test" - Also some maintenance work in the series "mm/damon/paddr: simplify page level access re-check for pageout" "mm/damon: misc fixes and improvements" - David Hildenbrand has disabled some known-to-fail selftests ni the series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL". - memcg metadata storage optimizations from Shakeel Butt in "memcg: reduce memory consumption by memcg stats". - DAX fixes and maintenance work from Vishal Verma in the series "dax/bus.c: Fixups for dax-bus locking"" * tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits) memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault selftests: cgroup: add tests to verify the zswap writeback path mm: memcg: make alloc_mem_cgroup_per_node_info() return bool mm/damon/core: fix return value from damos_wmark_metric_value mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED selftests: cgroup: remove redundant enabling of memory controller Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT Docs/mm/damon/design: use a list for supported filters Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file selftests/damon: classify tests for functionalities and regressions selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None' selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts selftests/damon/_damon_sysfs: check errors from nr_schemes file reads mm/damon/core: initialize ->esz_bp from damos_quota_init_priv() selftests/damon: add a test for DAMOS quota goal ... |
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Linus Torvalds | ff9a79307f |
Kbuild updates for v6.10
- Avoid 'constexpr', which is a keyword in C23 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of 'dt_binding_check' - Fix weak references to avoid GOT entries in position-independent code generation - Convert the last use of 'optional' property in arch/sh/Kconfig - Remove support for the 'optional' property in Kconfig - Remove support for Clang's ThinLTO caching, which does not work with the .incbin directive - Change the semantics of $(src) so it always points to the source directory, which fixes Makefile inconsistencies between upstream and downstream - Fix 'make tar-pkg' for RISC-V to produce a consistent package - Provide reasonable default coverage for objtool, sanitizers, and profilers - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc. - Remove the last use of tristate choice in drivers/rapidio/Kconfig - Various cleanups and fixes in Kconfig -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmZFlGcVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG8voQALC8NtFpduWVfLRj2Qg6Ll/xf1vX 2igcTJEOFHkeqXLGoT8dTDKLEipUBUvKyguPq66CGwVTe2g6zy/nUSXeVtFrUsIa msLTi8FqhqUo5lodNvGMRf8qqmuqcvnXoiQwIocF92jtsFy14bhiFY+n4HfcFNjj GOKwqBZYQUwY/VVb090efc7RfS9c7uwABJSBelSoxg3AGZriwjGy7Pw5aSKGgVYi inqL1eR6qwPP6z7CgQWM99soP+zwybFZmnQrsD9SniRBI4rtAat8Ih5jQFaSUFUQ lk2w0NQBRFN88/uR2IJ2GWuIlQ74WeJ+QnCqVuQ59tV5zw90wqSmLzngfPD057Dv JjNuhk0UyXVtpIg3lRtd4810ppNSTe33b9OM4O2H846W/crju5oDRNDHcflUXcwm Rmn5ho1rb5QVzDVejJbgwidnUInSgJ9PZcvXQ/RJVZPhpgsBzAY9pQexG1G3hviw y9UDrt6KP6bF9tHjmolmtdIes9Pj0c4dN6/Rdj4HS4hIQ/GDar0tnwvOvtfUctNL orJlBsA6GeMmDVXKkR0ytOCWRYqWWbyt8g70RVKQJfuHX7/hGyAQPaQ2/u4mQhC2 aevYfbNJMj0VDfGz81HDBKFtkc5n+Ite8l157dHEl2LEabkOkRdNVcn7SNbOvZmd ZCSnZ31h7woGfNho =D5B/ -----END PGP SIGNATURE----- Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Avoid 'constexpr', which is a keyword in C23 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of 'dt_binding_check' - Fix weak references to avoid GOT entries in position-independent code generation - Convert the last use of 'optional' property in arch/sh/Kconfig - Remove support for the 'optional' property in Kconfig - Remove support for Clang's ThinLTO caching, which does not work with the .incbin directive - Change the semantics of $(src) so it always points to the source directory, which fixes Makefile inconsistencies between upstream and downstream - Fix 'make tar-pkg' for RISC-V to produce a consistent package - Provide reasonable default coverage for objtool, sanitizers, and profilers - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc. - Remove the last use of tristate choice in drivers/rapidio/Kconfig - Various cleanups and fixes in Kconfig * tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits) kconfig: use sym_get_choice_menu() in sym_check_prop() rapidio: remove choice for enumeration kconfig: lxdialog: remove initialization with A_NORMAL kconfig: m/nconf: merge two item_add_str() calls kconfig: m/nconf: remove dead code to display value of bool choice kconfig: m/nconf: remove dead code to display children of choice members kconfig: gconf: show checkbox for choice correctly kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal Makefile: remove redundant tool coverage variables kbuild: provide reasonable defaults for tool coverage modules: Drop the .export_symbol section from the final modules kconfig: use menu_list_for_each_sym() in sym_check_choice_deps() kconfig: use sym_get_choice_menu() in conf_write_defconfig() kconfig: add sym_get_choice_menu() helper kconfig: turn defaults and additional prompt for choice members into error kconfig: turn missing prompt for choice members into error kconfig: turn conf_choice() into void function kconfig: use linked list in sym_set_changed() kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED kconfig: gconf: remove debug code ... |
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Linus Torvalds | 70a663205d |
Probes updates for v6.10:
- tracing/probes: Adding new pseudo-types %pd and %pD support for dumping dentry name from 'struct dentry *' and file name from 'struct file *'. - uprobes: Some performance optimizations have been done. . Speed up the BPF uprobe event by delaying the fetching of the uprobe event arguments that are not used in BPF. . Avoid locking by speculatively checking whether uprobe event is valid. . Reduce lock contention by using read/write_lock instead of spinlock for uprobe list operation. This improved BPF uprobe benchmark result 43% on average. - rethook: Removes non-fatal warning messages when tracing stack from BPF and skip rcu_is_watching() validation in rethook if possible. - objpool: Optimizing objpool (which is used by kretprobes and fprobe as rethook backend storage) by inlining functions and avoid caching nr_cpu_ids because it is a const value. - fprobe: Add entry/exit callbacks types (code cleanup) - kprobes: Check ftrace was killed in kprobes if it uses ftrace. -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmZFUxsbHG1hc2FtaS5o aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8b+fIH/A96/SeC5WRLhXmHfTCM IvKUea2n0b0oV/2pVfHqfkCBTICuUZ97Opd9VH9jLtjBOTh0fUOGZ2DNVGdSYfWm IIkS5dhuZxHXrSHEVYykwLHI3AOL7Q6Ny9EmOg1CNMidUkPMNtBvppsBYPlFU/B/ qQJAvOdkVOnNITCaas0+MNgepoVVKdJzdNQ1I4WrGyG8isCZBaCYKo2QcGyheCNN y8NXvnVHgmgHQ8nTaeE5AawclFzFnhwHfPQPe1kiyGrx15b8K+VYmaZxPKv33A1a KT3TKJ1Ep7s7iWFh2iPVJzIwOXCmSnvNTKfNx/MDuKtO7UVfFwytoMEaekbmv3bG VqM= =n/mW -----END PGP SIGNATURE----- Merge tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull probes updates from Masami Hiramatsu: - tracing/probes: Add new pseudo-types %pd and %pD support for dumping dentry name from 'struct dentry *' and file name from 'struct file *' - uprobes performance optimizations: - Speed up the BPF uprobe event by delaying the fetching of the uprobe event arguments that are not used in BPF - Avoid locking by speculatively checking whether uprobe event is valid - Reduce lock contention by using read/write_lock instead of spinlock for uprobe list operation. This improved BPF uprobe benchmark result 43% on average - rethook: Remove non-fatal warning messages when tracing stack from BPF and skip rcu_is_watching() validation in rethook if possible - objpool: Optimize objpool (which is used by kretprobes and fprobe as rethook backend storage) by inlining functions and avoid caching nr_cpu_ids because it is a const value - fprobe: Add entry/exit callbacks types (code cleanup) - kprobes: Check ftrace was killed in kprobes if it uses ftrace * tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: kprobe/ftrace: bail out if ftrace was killed selftests/ftrace: Fix required features for VFS type test case objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids objpool: enable inlining objpool_push() and objpool_pop() operations rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get() ftrace: make extra rcu_is_watching() validation check optional uprobes: reduce contention on uprobes_tree access rethook: Remove warning messages printed for finding return address of a frame. fprobe: Add entry/exit callbacks types selftests/ftrace: add fprobe test cases for VFS type "%pd" and "%pD" selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD" Documentation: tracing: add new type '%pd' and '%pD' for kprobe tracing/probes: support '%pD' type for print struct file's name tracing/probes: support '%pd' type for print struct dentry's name uprobes: add speculative lockless system-wide uprobe filter check uprobes: prepare uprobe args buffer lazily uprobes: encapsulate preparation of uprobe args buffer |
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Linus Torvalds | ff2632d7d0 |
powerpc updates for 6.10
- Enable BPF Kernel Functions (kfuncs) in the powerpc BPF JIT. - Allow per-process DEXCR (Dynamic Execution Control Register) settings via prctl, notably NPHIE which controls hashst/hashchk for ROP protection. - Install powerpc selftests in sub-directories. Note this changes the way run_kselftest.sh needs to be invoked for powerpc selftests. - Change fadump (Firmware Assisted Dump) to better handle memory add/remove. - Add support for passing additional parameters to the fadump kernel. - Add support for updating the kdump image on CPU/memory add/remove events. - Other small features, cleanups and fixes. Thanks to: Andrew Donnellan, Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Benjamin Gray, Bjorn Helgaas, Christian Zigotzky, Christophe Jaillet, Christophe Leroy, Colin Ian King, Cédric Le Goater, Dr. David Alan Gilbert, Erhard Furtner, Frank Li, GUO Zihua, Ganesh Goudar, Geoff Levand, Ghanshyam Agrawal, Greg Kurz, Hari Bathini, Joel Stanley, Justin Stitt, Kunwu Chan, Li Yang, Lidong Zhong, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Matthias Schiffer, Naresh Kamboju, Nathan Chancellor, Nathan Lynch, Naveen N Rao, Nicholas Miehlbradt, Ran Wang, Randy Dunlap, Ritesh Harjani, Sachin Sant, Shirisha Ganta, Shrikanth Hegde, Sourabh Jain, Stephen Rothwell, sundar, Thorsten Blum, Vaibhav Jain, Xiaowei Bao, Yang Li, Zhao Chenhui. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmZHLtwTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgCGdD/0cqQkYl6+E0/K68Y7jnAWF+l0LNFlm /4jZ+zKXPiPhSdaQq4xo2ZjEooUPsm3c+AHidmrAtOMBULvv4pyciu61hrVu4Y2b aAudkBMUc+i/Lfaz7fq1KnN4LDFVm7xZZ+i/ju9tOBLMpOZ3YZ+YoOGA6nqsshJF XuB5h0T+H55he1wBpvyyrsUUyss53Mp3IsajxdwBOsUDDp0fSAg8SLEyhoiK3BsQ EjEa6iEqJSBheqFEXPvqsMuqM3k51CHe/pCOMODjo7P+u/MNrClZUscZKXGB5xq9 Bu3SPxIYfRmU4XE53517faElEPmlxSBrjQGCD1EGEVXGsjn6r7TD6R5voow3SoUq CLTy90KNNrS1cIqeomu6bJ/anzYrViqTdekImA7Vb+Ol8f+uT9l+l1D75eYOKPQ3 N0AHoa4rnWIb5kjCAjHaZ54O+B2q2tPlQqFUmt+BrvZyKS13zjE36stnArxP3MPC Xw6y3huX3AkZiJ4mQYRiBn//xGOLwrRCd/EoTDnoe08yq0Hoor6qIm4uEy2Nu3Kf 0mBsEOxMsmQd6NEq43B/sFgVbbxKhAyxfZ9gHqxDQZcgoxXcMesyj/n4+jM5sRYK zmavLlykM2Tjlh1evs8+e0mCEwDjDn2GRlqstJQTrmnGhbMKi3jvw9I7gGtZVqbS kAflTXzsIXvxBA== =GoCV -----END PGP SIGNATURE----- Merge tag 'powerpc-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Enable BPF Kernel Functions (kfuncs) in the powerpc BPF JIT. - Allow per-process DEXCR (Dynamic Execution Control Register) settings via prctl, notably NPHIE which controls hashst/hashchk for ROP protection. - Install powerpc selftests in sub-directories. Note this changes the way run_kselftest.sh needs to be invoked for powerpc selftests. - Change fadump (Firmware Assisted Dump) to better handle memory add/remove. - Add support for passing additional parameters to the fadump kernel. - Add support for updating the kdump image on CPU/memory add/remove events. - Other small features, cleanups and fixes. Thanks to Andrew Donnellan, Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Benjamin Gray, Bjorn Helgaas, Christian Zigotzky, Christophe Jaillet, Christophe Leroy, Colin Ian King, Cédric Le Goater, Dr. David Alan Gilbert, Erhard Furtner, Frank Li, GUO Zihua, Ganesh Goudar, Geoff Levand, Ghanshyam Agrawal, Greg Kurz, Hari Bathini, Joel Stanley, Justin Stitt, Kunwu Chan, Li Yang, Lidong Zhong, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Matthias Schiffer, Naresh Kamboju, Nathan Chancellor, Nathan Lynch, Naveen N Rao, Nicholas Miehlbradt, Ran Wang, Randy Dunlap, Ritesh Harjani, Sachin Sant, Shirisha Ganta, Shrikanth Hegde, Sourabh Jain, Stephen Rothwell, sundar, Thorsten Blum, Vaibhav Jain, Xiaowei Bao, Yang Li, and Zhao Chenhui. * tag 'powerpc-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (85 commits) powerpc/fadump: Fix section mismatch warning powerpc/85xx: fix compile error without CONFIG_CRASH_DUMP powerpc/fadump: update documentation about bootargs_append powerpc/fadump: pass additional parameters when fadump is active powerpc/fadump: setup additional parameters for dump capture kernel powerpc/pseries/fadump: add support for multiple boot memory regions selftests/powerpc/dexcr: Fix spelling mistake "predicition" -> "prediction" KVM: PPC: Book3S HV nestedv2: Fix an error handling path in gs_msg_ops_kvmhv_nestedv2_config_fill_info() KVM: PPC: Fix documentation for ppc mmu caps KVM: PPC: code cleanup for kvmppc_book3s_irqprio_deliver KVM: PPC: Book3S HV nestedv2: Cancel pending DEC exception powerpc/xmon: Check cpu id in commands "c#", "dp#" and "dx#" powerpc/code-patching: Use dedicated memory routines for patching powerpc/code-patching: Test patch_instructions() during boot powerpc64/kasan: Pass virtual addresses to kasan_init_phys_region() powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX powerpc: Fix typos powerpc/eeh: Fix spelling of the word "auxillary" and update comment macintosh/ams: Fix unused variable warning powerpc/Makefile: Remove bits related to the previous use of -mcmodel=large ... |
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Borislav Petkov (AMD) | 9dba9c67e5 |
x86/alternatives: Use the correct length when optimizing NOPs
Commit in Fixes moved the optimize_nops() call inside apply_relocation()
and made it a second optimization pass after the relocations have been
done.
Since optimize_nops() works only on NOPs, that is fine and it'll simply
jump over instructions which are not NOPs.
However, it made that call with repl_len as the buffer length to
optimize.
However, it can happen that there are alternatives calls like this one:
alternative("mfence; lfence", "", ALT_NOT(X86_FEATURE_APIC_MSRS_FENCE));
where the replacement length is 0. And using repl_len is wrong because
apply_alternatives() expands the buffer size to the length of the source
insn that is being patched, by padding it with one-byte NOPs:
for (; insn_buff_sz < a->instrlen; insn_buff_sz++)
insn_buff[insn_buff_sz] = 0x90;
Long story short: pass the length of the original instruction(s) as the
length of the temporary buffer which to optimize.
Result:
SMP alternatives: feat: 11*32+27, old: (lapic_next_deadline+0x9/0x50 (ffffffff81061829) len: 6), repl: (ffffffff89b1cc60, len: 0) flags: 0x1
SMP alternatives: ffffffff81061829: old_insn: 0f ae f0 0f ae e8
SMP alternatives: ffffffff81061829: final_insn: 90 90 90 90 90 90
=>
SMP alternatives: feat: 11*32+27, old: (lapic_next_deadline+0x9/0x50 (ffffffff81061839) len: 6), repl: (ffffffff89b1cc60, len: 0) flags: 0x1
SMP alternatives: ffffffff81061839: [0:6) optimized NOPs: 66 0f 1f 44 00 00
SMP alternatives: ffffffff81061839: old_insn: 0f ae f0 0f ae e8
SMP alternatives: ffffffff81061839: final_insn: 66 0f 1f 44 00 00
Fixes:
|
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Stephen Brennan | 1a7d0890dd |
kprobe/ftrace: bail out if ftrace was killed
If an error happens in ftrace, ftrace_kill() will prevent disarming kprobes. Eventually, the ftrace_ops associated with the kprobes will be freed, yet the kprobes will still be active, and when triggered, they will use the freed memory, likely resulting in a page fault and panic. This behavior can be reproduced quite easily, by creating a kprobe and then triggering a ftrace_kill(). For simplicity, we can simulate an ftrace error with a kernel module like [1]: [1]: https://github.com/brenns10/kernel_stuff/tree/master/ftrace_killer sudo perf probe --add commit_creds sudo perf trace -e probe:commit_creds # In another terminal make sudo insmod ftrace_killer.ko # calls ftrace_kill(), simulating bug # Back to perf terminal # ctrl-c sudo perf probe --del commit_creds After a short period, a page fault and panic would occur as the kprobe continues to execute and uses the freed ftrace_ops. While ftrace_kill() is supposed to be used only in extreme circumstances, it is invoked in FTRACE_WARN_ON() and so there are many places where an unexpected bug could be triggered, yet the system may continue operating, possibly without the administrator noticing. If ftrace_kill() does not panic the system, then we should do everything we can to continue operating, rather than leave a ticking time bomb. Link: https://lore.kernel.org/all/20240501162956.229427-1-stephen.s.brennan@oracle.com/ Signed-off-by: Stephen Brennan <stephen.s.brennan@oracle.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Guo Ren <guoren@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
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Bjorn Helgaas | 850aae933c |
Revert "x86/apic/msi: Enable PCI/IMS"
This reverts commit
|
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Linus Torvalds | f4b0c4b508 |
ARM:
* Move a lot of state that was previously stored on a per vcpu basis into a per-CPU area, because it is only pertinent to the host while the vcpu is loaded. This results in better state tracking, and a smaller vcpu structure. * Add full handling of the ERET/ERETAA/ERETAB instructions in nested virtualisation. The last two instructions also require emulating part of the pointer authentication extension. As a result, the trap handling of pointer authentication has been greatly simplified. * Turn the global (and not very scalable) LPI translation cache into a per-ITS, scalable cache, making non directly injected LPIs much cheaper to make visible to the vcpu. * A batch of pKVM patches, mostly fixes and cleanups, as the upstreaming process seems to be resuming. Fingers crossed! * Allocate PPIs and SGIs outside of the vcpu structure, allowing for smaller EL2 mapping and some flexibility in implementing more or less than 32 private IRQs. * Purge stale mpidr_data if a vcpu is created after the MPIDR map has been created. * Preserve vcpu-specific ID registers across a vcpu reset. * Various minor cleanups and improvements. LoongArch: * Add ParaVirt IPI support. * Add software breakpoint support. * Add mmio trace events support. RISC-V: * Support guest breakpoints using ebreak * Introduce per-VCPU mp_state_lock and reset_cntx_lock * Virtualize SBI PMU snapshot and counter overflow interrupts * New selftests for SBI PMU and Guest ebreak * Some preparatory work for both TDX and SNP page fault handling. This also cleans up the page fault path, so that the priorities of various kinds of fauls (private page, no memory, write to read-only slot, etc.) are easier to follow. x86: * Minimize amount of time that shadow PTEs remain in the special REMOVED_SPTE state. This is a state where the mmu_lock is held for reading but concurrent accesses to the PTE have to spin; shortening its use allows other vCPUs to repopulate the zapped region while the zapper finishes tearing down the old, defunct page tables. * Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID field, which is defined by hardware but left for software use. This lets KVM communicate its inability to map GPAs that set bits 51:48 on hosts without 5-level nested page tables. Guest firmware is expected to use the information when mapping BARs; this avoids that they end up at a legal, but unmappable, GPA. * Fixed a bug where KVM would not reject accesses to MSR that aren't supposed to exist given the vCPU model and/or KVM configuration. * As usual, a bunch of code cleanups. x86 (AMD): * Implement a new and improved API to initialize SEV and SEV-ES VMs, which will also be extendable to SEV-SNP. The new API specifies the desired encryption in KVM_CREATE_VM and then separately initializes the VM. The new API also allows customizing the desired set of VMSA features; the features affect the measurement of the VM's initial state, and therefore enabling them cannot be done tout court by the hypervisor. While at it, the new API includes two bugfixes that couldn't be applied to the old one without a flag day in userspace or without affecting the initial measurement. When a SEV-ES VM is created with the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are rejected once the VMSA has been encrypted. Also, the FPU and AVX state will be synchronized and encrypted too. * Support for GHCB version 2 as applicable to SEV-ES guests. This, once more, is only accessible when using the new KVM_SEV_INIT2 flow for initialization of SEV-ES VMs. x86 (Intel): * An initial bunch of prerequisite patches for Intel TDX were merged. They generally don't do anything interesting. The only somewhat user visible change is a new debugging mode that checks that KVM's MMU never triggers a #VE virtualization exception in the guest. * Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig VM-Exit to L1, as per the SDM. Generic: * Use vfree() instead of kvfree() for allocations that always use vcalloc() or __vcalloc(). * Remove .change_pte() MMU notifier - the changes to non-KVM code are small and Andrew Morton asked that I also take those through the KVM tree. The callback was only ever implemented by KVM (which was also the original user of MMU notifiers) but it had been nonfunctional ever since calls to set_pte_at_notify were wrapped with invalidate_range_start and invalidate_range_end... in 2012. Selftests: * Enhance the demand paging test to allow for better reporting and stressing of UFFD performance. * Convert the steal time test to generate TAP-friendly output. * Fix a flaky false positive in the xen_shinfo_test due to comparing elapsed time across two different clock domains. * Skip the MONITOR/MWAIT test if the host doesn't actually support MWAIT. * Avoid unnecessary use of "sudo" in the NX hugepage test wrapper shell script, to play nice with running in a minimal userspace environment. * Allow skipping the RSEQ test's sanity check that the vCPU was able to complete a reasonable number of KVM_RUNs, as the assert can fail on a completely valid setup. If the test is run on a large-ish system that is otherwise idle, and the test isn't affined to a low-ish number of CPUs, the vCPU task can be repeatedly migrated to CPUs that are in deep sleep states, which results in the vCPU having very little net runtime before the next migration due to high wakeup latencies. * Define _GNU_SOURCE for all selftests to fix a warning that was introduced by a change to kselftest_harness.h late in the 6.9 cycle, and because forcing every test to #define _GNU_SOURCE is painful. * Provide a global pseudo-RNG instance for all tests, so that library code can generate random, but determinstic numbers. * Use the global pRNG to randomly force emulation of select writes from guest code on x86, e.g. to help validate KVM's emulation of locked accesses. * Allocate and initialize x86's GDT, IDT, TSS, segments, and default exception handlers at VM creation, instead of forcing tests to manually trigger the related setup. Documentation: * Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation. -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmZE878UHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroOukQf+LcvZsWtrC7Wd5K9SQbYXaS4Rk6P6 JHoQW2d0hUN893J2WibEw+l1J/0vn5JumqHXyZgJ7CbaMtXkWWQTwDSDLuURUKpv XNB3Sb17G87NH+s1tOh0tA9h5upbtlHVHvrtIwdbb9+XHgQ6HTL4uk+HdfO/p9fW cWBEZAKoWcCIa99Numv3pmq5vdrvBlNggwBugBS8TH69EKMw+V1Vu1SFkIdNDTQk NJJ28cohoP3wnwlIHaXSmU4RujipPH3Lm/xupyA5MwmzO713eq2yUqV49jzhD5/I MA4Ruvgrdm4wpp89N9lQMyci91u6q7R9iZfMu0tSg2qYI3UPKIdstd8sOA== =2lED -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "ARM: - Move a lot of state that was previously stored on a per vcpu basis into a per-CPU area, because it is only pertinent to the host while the vcpu is loaded. This results in better state tracking, and a smaller vcpu structure. - Add full handling of the ERET/ERETAA/ERETAB instructions in nested virtualisation. The last two instructions also require emulating part of the pointer authentication extension. As a result, the trap handling of pointer authentication has been greatly simplified. - Turn the global (and not very scalable) LPI translation cache into a per-ITS, scalable cache, making non directly injected LPIs much cheaper to make visible to the vcpu. - A batch of pKVM patches, mostly fixes and cleanups, as the upstreaming process seems to be resuming. Fingers crossed! - Allocate PPIs and SGIs outside of the vcpu structure, allowing for smaller EL2 mapping and some flexibility in implementing more or less than 32 private IRQs. - Purge stale mpidr_data if a vcpu is created after the MPIDR map has been created. - Preserve vcpu-specific ID registers across a vcpu reset. - Various minor cleanups and improvements. LoongArch: - Add ParaVirt IPI support - Add software breakpoint support - Add mmio trace events support RISC-V: - Support guest breakpoints using ebreak - Introduce per-VCPU mp_state_lock and reset_cntx_lock - Virtualize SBI PMU snapshot and counter overflow interrupts - New selftests for SBI PMU and Guest ebreak - Some preparatory work for both TDX and SNP page fault handling. This also cleans up the page fault path, so that the priorities of various kinds of fauls (private page, no memory, write to read-only slot, etc.) are easier to follow. x86: - Minimize amount of time that shadow PTEs remain in the special REMOVED_SPTE state. This is a state where the mmu_lock is held for reading but concurrent accesses to the PTE have to spin; shortening its use allows other vCPUs to repopulate the zapped region while the zapper finishes tearing down the old, defunct page tables. - Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID field, which is defined by hardware but left for software use. This lets KVM communicate its inability to map GPAs that set bits 51:48 on hosts without 5-level nested page tables. Guest firmware is expected to use the information when mapping BARs; this avoids that they end up at a legal, but unmappable, GPA. - Fixed a bug where KVM would not reject accesses to MSR that aren't supposed to exist given the vCPU model and/or KVM configuration. - As usual, a bunch of code cleanups. x86 (AMD): - Implement a new and improved API to initialize SEV and SEV-ES VMs, which will also be extendable to SEV-SNP. The new API specifies the desired encryption in KVM_CREATE_VM and then separately initializes the VM. The new API also allows customizing the desired set of VMSA features; the features affect the measurement of the VM's initial state, and therefore enabling them cannot be done tout court by the hypervisor. While at it, the new API includes two bugfixes that couldn't be applied to the old one without a flag day in userspace or without affecting the initial measurement. When a SEV-ES VM is created with the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are rejected once the VMSA has been encrypted. Also, the FPU and AVX state will be synchronized and encrypted too. - Support for GHCB version 2 as applicable to SEV-ES guests. This, once more, is only accessible when using the new KVM_SEV_INIT2 flow for initialization of SEV-ES VMs. x86 (Intel): - An initial bunch of prerequisite patches for Intel TDX were merged. They generally don't do anything interesting. The only somewhat user visible change is a new debugging mode that checks that KVM's MMU never triggers a #VE virtualization exception in the guest. - Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig VM-Exit to L1, as per the SDM. Generic: - Use vfree() instead of kvfree() for allocations that always use vcalloc() or __vcalloc(). - Remove .change_pte() MMU notifier - the changes to non-KVM code are small and Andrew Morton asked that I also take those through the KVM tree. The callback was only ever implemented by KVM (which was also the original user of MMU notifiers) but it had been nonfunctional ever since calls to set_pte_at_notify were wrapped with invalidate_range_start and invalidate_range_end... in 2012. Selftests: - Enhance the demand paging test to allow for better reporting and stressing of UFFD performance. - Convert the steal time test to generate TAP-friendly output. - Fix a flaky false positive in the xen_shinfo_test due to comparing elapsed time across two different clock domains. - Skip the MONITOR/MWAIT test if the host doesn't actually support MWAIT. - Avoid unnecessary use of "sudo" in the NX hugepage test wrapper shell script, to play nice with running in a minimal userspace environment. - Allow skipping the RSEQ test's sanity check that the vCPU was able to complete a reasonable number of KVM_RUNs, as the assert can fail on a completely valid setup. If the test is run on a large-ish system that is otherwise idle, and the test isn't affined to a low-ish number of CPUs, the vCPU task can be repeatedly migrated to CPUs that are in deep sleep states, which results in the vCPU having very little net runtime before the next migration due to high wakeup latencies. - Define _GNU_SOURCE for all selftests to fix a warning that was introduced by a change to kselftest_harness.h late in the 6.9 cycle, and because forcing every test to #define _GNU_SOURCE is painful. - Provide a global pseudo-RNG instance for all tests, so that library code can generate random, but determinstic numbers. - Use the global pRNG to randomly force emulation of select writes from guest code on x86, e.g. to help validate KVM's emulation of locked accesses. - Allocate and initialize x86's GDT, IDT, TSS, segments, and default exception handlers at VM creation, instead of forcing tests to manually trigger the related setup. Documentation: - Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (225 commits) selftests/kvm: remove dead file KVM: selftests: arm64: Test vCPU-scoped feature ID registers KVM: selftests: arm64: Test that feature ID regs survive a reset KVM: selftests: arm64: Store expected register value in set_id_regs KVM: selftests: arm64: Rename helper in set_id_regs to imply VM scope KVM: arm64: Only reset vCPU-scoped feature ID regs once KVM: arm64: Reset VM feature ID regs from kvm_reset_sys_regs() KVM: arm64: Rename is_id_reg() to imply VM scope KVM: arm64: Destroy mpidr_data for 'late' vCPU creation KVM: arm64: Use hVHE in pKVM by default on CPUs with VHE support KVM: arm64: Fix hvhe/nvhe early alias parsing KVM: SEV: Allow per-guest configuration of GHCB protocol version KVM: SEV: Add GHCB handling for termination requests KVM: SEV: Add GHCB handling for Hypervisor Feature Support requests KVM: SEV: Add support to handle AP reset MSR protocol KVM: x86: Explicitly zero kvm_caps during vendor module load KVM: x86: Fully re-initialize supported_mce_cap on vendor module load KVM: x86: Fully re-initialize supported_vm_types on vendor module load KVM: x86/mmu: Sanity check that __kvm_faultin_pfn() doesn't create noslot pfns KVM: x86/mmu: Initialize kvm_page_fault's pfn and hva to error values ... |
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Linus Torvalds | a49468240e |
Modules changes for v6.10-rc1
Finally something fun. Mike Rapoport does some cleanup to allow us to take out module_alloc() out of modules into a new paint shedded execmem_alloc() and execmem_free() so to make emphasis these helpers are actually used outside of modules. It starts with a no-functional changes API rename / placeholders to then allow architectures to define their requirements into a new shiny struct execmem_info with ranges, and requirements for those ranges. Archs now can intitialize this execmem_info as the last part of mm_core_init() if they have to diverge from the norm. Each range is a known type clearly articulated and spelled out in enum execmem_type. Although a lot of this is major cleanup and prep work for future enhancements an immediate clear gain is we get to enable KPROBES without MODULES now. That is ultimately what motiviated to pick this work up again, now with smaller goal as concrete stepping stone. This has been sitting on linux-next for a little less than a month, a few issues were found already and fixed, in particular an odd mips boot issue. Arch folks reviewed the code too. This is ready for wider exposure and testing. -----BEGIN PGP SIGNATURE----- iQJGBAABCgAwFiEENnNq2KuOejlQLZofziMdCjCSiKcFAmZDHfMSHG1jZ3JvZkBr ZXJuZWwub3JnAAoJEM4jHQowkoinfIwP/iFsr89v9BjWdRTqzufuHwjOxvFymWxU BbEpOppRny3CckDU9ag9hLIlUaSL1Bg56Zb+znzp5stKOoiQYMDBvjSYdfybPxW2 mRS6SClMF1ubWbzdysdp5Ld9u8T0MQPCLX+P2pKhZRGi0wjkBf5WEkTje+muJKI3 4vYkXS7bNhuTwRQ+EGfze4+AeleGdQJKDWFY00TW9mZTTBADjfHyYU5o0m9ijf5l 3V/weUznODvjVJStbIF7wEQ845Ae02LN1zXfsloIOuBMhcMju+x8IjPgPbD0KhX2 yA48q7mVWkirYp0L5GSQchtqV1GBiP0NK1xXWEpyx6EqQZ4RJCsQhlhjijoExYBR ylP4bqiGVuE3IN075X0OzGCnmOStuzwssfDmug0sMAZH/MvmOQ21WzZdet2nLMas wwJArHqZsBI9BnBlvH9ZM4Y9f1zC7iR1wULaNGwXLPx34X9PIch8Yk+RElP1kMFQ +YrjOuWPjl63pmSkrkk+Pe2eesMPcPB41M6Q2iCjDlp0iBp63LIx2XISUbTf0ljM EsI4ZQseYpx+BmC7AuQfmXvEOjuXII9z072/artVWcB2u/87ixIprnqZVhcs/spy 73DnXB4ufor2PCCC5Xrb/6kT6G+PzF3VwTbHQ1D+fYZ5n2qdyG+LKxgXbtxsRVTp oUg+Z/AJaCMt =Nsg4 -----END PGP SIGNATURE----- Merge tag 'modules-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux Pull modules updates from Luis Chamberlain: "Finally something fun. Mike Rapoport does some cleanup to allow us to take out module_alloc() out of modules into a new paint shedded execmem_alloc() and execmem_free() so to make emphasis these helpers are actually used outside of modules. It starts with a non-functional changes API rename / placeholders to then allow architectures to define their requirements into a new shiny struct execmem_info with ranges, and requirements for those ranges. Archs now can intitialize this execmem_info as the last part of mm_core_init() if they have to diverge from the norm. Each range is a known type clearly articulated and spelled out in enum execmem_type. Although a lot of this is major cleanup and prep work for future enhancements an immediate clear gain is we get to enable KPROBES without MODULES now. That is ultimately what motiviated to pick this work up again, now with smaller goal as concrete stepping stone" * tag 'modules-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of kprobes: remove dependency on CONFIG_MODULES powerpc: use CONFIG_EXECMEM instead of CONFIG_MODULES where appropriate x86/ftrace: enable dynamic ftrace without CONFIG_MODULES arch: make execmem setup available regardless of CONFIG_MODULES powerpc: extend execmem_params for kprobes allocations arm64: extend execmem_info for generated code allocations riscv: extend execmem_params for generated code allocations mm/execmem, arch: convert remaining overrides of module_alloc to execmem mm/execmem, arch: convert simple overrides of module_alloc to execmem mm: introduce execmem_alloc() and execmem_free() module: make module_memory_{alloc,free} more self-contained sparc: simplify module_alloc() nios2: define virtual address space for modules mips: module: rename MODULE_START to MODULES_VADDR arm64: module: remove unneeded call to kasan_alloc_module_shadow() kallsyms: replace deprecated strncpy with strscpy module: allow UNUSED_KSYMS_WHITELIST to be relative against objtree. |
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Linus Torvalds | 9776dd3609 |
X86 interrupt handling update:
Support for posted interrupts on bare metal Posted interrupts is a virtualization feature which allows to inject interrupts directly into a guest without host interaction. The VT-d interrupt remapping hardware sets the bit which corresponds to the interrupt vector in a vector bitmap which is either used to inject the interrupt directly into the guest via a virtualized APIC or in case that the guest is scheduled out provides a host side notification interrupt which informs the host that an interrupt has been marked pending in the bitmap. This can be utilized on bare metal for scenarios where multiple devices, e.g. NVME storage, raise interrupts with a high frequency. In the default mode these interrupts are handles independently and therefore require a full roundtrip of interrupt entry/exit. Utilizing posted interrupts this roundtrip overhead can be avoided by coalescing these interrupt entries to a single entry for the posted interrupt notification. The notification interrupt then demultiplexes the pending bits in a memory based bitmap and invokes the corresponding device specific handlers. Depending on the usage scenario and device utilization throughput improvements between 10% and 130% have been measured. As this is only relevant for high end servers with multiple device queues per CPU attached and counterproductive for situations where interrupts are arriving at distinct times, the functionality is opt-in via a kernel command line parameter. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmZBGUITHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYod3xD/98Xa4qZN7eceyyGUhgXnPLOKQzGQ7k 7cmhsoAYjABeXLvuAvtKePL7ky7OPcqVW2E/g0+jdZuRDkRDbnVkM7CDMRTyL0/b BZLhVAXyANKjK79a5WvjL0zDasYQRQ16MQJ6TPa++mX0KhZSI7KvXWIqPWov5i02 n8UbPUraH5bJi3qGKm6u4n2261Be1gtDag0ZjmGma45/3wsn3bWPoB7iPK6qxmq3 Q7VARPXAcRp5wYACk6mCOM1dOXMUV9CgI5AUk92xGfXi4RAdsFeNSzeQWn9jHWOf CYbbJjNl4QmGP4IWmy6/Up4vIiEhUCOT2DmHsygrQTs/G+nPnMAe1qUuDuECiofj iToBL3hn1dHG8uINKOB81MJ33QEGWyYWY8PxxoR3LMTrhVpfChUlJO8T2XK5nu+i 2EA6XLtJiHacpXhn8HQam0aQN9nvi4wT1LzpkhmboyCQuXTiXuJNbyLIh5TdFa1n DzqAGhRB67z6eGevJJ7kTI1X71W0poMwYlzCU8itnLOK8np0zFQ8bgwwqm9opZGq V2eSDuZAbqXVolzmaF8NSfM+b/R9URQtWsZ8cEc+/OdVV4HR4zfeqejy60TuV/4G 39CTnn8vPBKcRSS6CAcJhKPhzIvHw4EMhoU4DJKBtwBdM58RyP9NY1wF3rIPJIGh sl61JBuYYuIZXg== =bqLN -----END PGP SIGNATURE----- Merge tag 'x86-irq-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 interrupt handling updates from Thomas Gleixner: "Add support for posted interrupts on bare metal. Posted interrupts is a virtualization feature which allows to inject interrupts directly into a guest without host interaction. The VT-d interrupt remapping hardware sets the bit which corresponds to the interrupt vector in a vector bitmap which is either used to inject the interrupt directly into the guest via a virtualized APIC or in case that the guest is scheduled out provides a host side notification interrupt which informs the host that an interrupt has been marked pending in the bitmap. This can be utilized on bare metal for scenarios where multiple devices, e.g. NVME storage, raise interrupts with a high frequency. In the default mode these interrupts are handles independently and therefore require a full roundtrip of interrupt entry/exit. Utilizing posted interrupts this roundtrip overhead can be avoided by coalescing these interrupt entries to a single entry for the posted interrupt notification. The notification interrupt then demultiplexes the pending bits in a memory based bitmap and invokes the corresponding device specific handlers. Depending on the usage scenario and device utilization throughput improvements between 10% and 130% have been measured. As this is only relevant for high end servers with multiple device queues per CPU attached and counterproductive for situations where interrupts are arriving at distinct times, the functionality is opt-in via a kernel command line parameter" * tag 'x86-irq-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/irq: Use existing helper for pending vector check iommu/vt-d: Enable posted mode for device MSIs iommu/vt-d: Make posted MSI an opt-in command line option x86/irq: Extend checks for pending vectors to posted interrupts x86/irq: Factor out common code for checking pending interrupts x86/irq: Install posted MSI notification handler x86/irq: Factor out handler invocation from common_interrupt() x86/irq: Set up per host CPU posted interrupt descriptors x86/irq: Reserve a per CPU IDT vector for posted MSIs x86/irq: Add a Kconfig option for posted MSI x86/irq: Remove bitfields in posted interrupt descriptor x86/irq: Unionize PID.PIR for 64bit access w/o casting KVM: VMX: Move posted interrupt descriptor out of VMX code |
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Linus Torvalds | a9d9ce3fbc |
A single update for the TSC synchronixation sanity checks:
The sad state of TSC being notoriously non-sychronized for several decades caused the kernel to grow quite rigorous sanity checks to detect whether the TSC is valid to be used for timekeeping. The TSC ADJUST MSR provides the offset between the initial TSC value after hardware reset and later modifications. This allows to detect cases where firmware tampers with the TSC and also allows to correct the firmware induced damage by resetting the offset in a controlled way. The universal correct rule is that the TSC ADJUST value has to be consistent within all CPUs of a socket. The kernel further assumes that the TSC offset should be consistent between sockets. That's not really correct as systems with a huge number of sockets are not architecurally guaranteed to reset the per socket TSC base synchronously. In case that the per socket offset is not consistent the kernel resets it to the offset of the boot CPU and then does a synchronization check which corrects for the inter socket delays. That works most of the time, but it is suboptimal as the firmware has eventually better information about the per socket offset and on sane systems that offset should just work in the validation checks. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmZCDA4THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYodLcD/4hZmCiEL97M+qb0rjmscKmJq/EOjxm pRgT/+vH2MakYh2xIjLSeMtRB5eFdfz+ZspJGEt017yW5l+saZ6edrq+g2qi1EfJ TDGbDGK9T6HR0WDplFLqLXolKS2lcvHbolATu/t5ZQmrRmuGuS+6t6eAoI9QcaWQ DaqMtdSQNq8B5hopaZtaJSTTkznD/CtKyMCvVKGxXE2gH6d6UmezR72f6oruzgg9 WXLDt1sPxg1zl1rS1GdeRa4xXrsLxr8THZ53Nr5pPyZV6FCSOZQtcurwhsIYcMO7 b3m+LU04XGURK196c0Uej8UwRCAHpD50aS91GcclXsR4wTKyFatVz9mpwZOK/F/L Pw+5O6xUeyIAKMr6YJl6KusPhhwDcYm+ETuTzMmWMyJEh91lLYHyCKniE3wsHpzT L7er6HWOwBaPlOnvuOhl4rzqr0F+9xLmWWq6s+85HlvlgfV1NjEhqi7dn/ZO1jdx Im3Xq8sq04tIMNjLPSTkovXmvU2us45yQk2HthWSM7FQ+vpzPDgdp1sVFsLK19cu +t0jI01qSUBzYvcM28CDX99hEI2L8Oo/nC1/Vq/4MB+KkEPCUMKr0ZA2nTKHL8lx +lOGdnzokr6DsbRdtfqWKywc/is2r1OXrOSBR23SwwK1XQ2aRMi/0F96Q0cR9lzt 6utxZRFhc7BtpA== =W1qL -----END PGP SIGNATURE----- Merge tag 'x86-timers-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 timers update from Thomas Gleixner: "A single update for the TSC synchronixation sanity checks: The sad state of TSC being notoriously non-sychronized for several decades caused the kernel to grow quite rigorous sanity checks to detect whether the TSC is valid to be used for timekeeping. The TSC ADJUST MSR provides the offset between the initial TSC value after hardware reset and later modifications. This allows to detect cases where firmware tampers with the TSC and also allows to correct the firmware induced damage by resetting the offset in a controlled way. The universal correct rule is that the TSC ADJUST value has to be consistent within all CPUs of a socket. The kernel further assumes that the TSC offset should be consistent between sockets. That's not really correct as systems with a huge number of sockets are not architecurally guaranteed to reset the per socket TSC base synchronously. In case that the per socket offset is not consistent the kernel resets it to the offset of the boot CPU and then does a synchronization check which corrects for the inter socket delays. That works most of the time, but it is suboptimal as the firmware has eventually better information about the per socket offset and on sane systems that offset should just work in the validation checks" * tag 'x86-timers-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tsc: Trust initial offset in architectural TSC-adjust MSRs |
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Linus Torvalds | 61deafa9ec |
Improve data types to fix Coccinelle division warnings
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Linus Torvalds | 964bbdfdf0 |
- Small cleanups and improvements
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Linus Torvalds | a1907ccdfe |
- Fix a clang-15 build warning and other cleanups
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Linus Torvalds | 5186ba3323 |
- Add a tracepoint to read out LLC occupancy of resource monitor IDs with the
goal of freeing them sooner rather than later - Other code improvements and cleanups -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmZCW64ACgkQEsHwGGHe VUq7Dw//ZM+4OX3l0P6NTv4WJ9UDn3IltRm+D61J6hYw19iETlGGAel5T6DI1LPT GYAoOazd9ouNjwU0YhOn6Se3SVWKxLLOGH+/RIJtqwiCwTy2nGfSPHw3pnTxwtK4 pRttm6fPQWIUuQyDrzmbJGP+va4YDtVtDyBkxNlk8pQTvF7X0QCcu6GjNW9r6+Md 92J2AwzeoDAeIc16vKHru4S3wBCqdP7xZ9GqBb8wrNxBy8taSN4wE9cuwDjev5Yw ANGeREv3odWvYQ7p0fQVY2j25ddjGNE4qEEJ1iAIJDh9bIHURAF3s1aSPqcMyHyF eB8NNf7ZjQhycmBX9ci6CHYOKc3i25nWiMoaC1iWZKQEviTt3OCEeKr20mjAfKOz wlUs55iGrHkbS10kB91Z6lOMDNiIu+x4kuiF5y1W73SDfkY+pYv8zLQL9rhNpYnd BEcOF+YaJuhi4Y7GUDb0fWdIUZcfGItSJyNbR8jaznJKcP2pjznSUKqM/AphZyuU bVsVsYkYQiE2vl4xYdmyHnxsfnpuMTVNuPpIonyp1mIa77iDVeiwYabkau+pz8L9 Rv1jhUmYVfawxKiRc6tOQAsxOtAiqrm2GBpZlisw8KtfzZaPC9h7U7bXC4up1TtH nZVt+qV/8M9nc3Trocb+d8djbrv+Uqh4EHPTBbFEfW6qsMFsXhk= =8EKr -----END PGP SIGNATURE----- Merge tag 'x86_cache_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 resource control updates from Borislav Petkov: - Add a tracepoint to read out LLC occupancy of resource monitor IDs with the goal of freeing them sooner rather than later - Other code improvements and cleanups * tag 'x86_cache_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/resctrl: Add tracepoint for llc_occupancy tracking x86/resctrl: Rename pseudo_lock_event.h to trace.h x86/resctrl: Simplify call convention for MSR update functions x86/resctrl: Pass domain to target CPU |
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Linus Torvalds | 25c7cb05fa |
- Switch the in-place instruction patching which lead to at least one weird bug
with 32-bit guests, seeing stale instruction bytes, to one working on a buffer, like the rest of the alternatives code does - Add a long overdue check to the X86_FEATURE flag modifying functions to warn when former get changed in a non-compatible way after alternatives have been patched because those changes will be already wrong - Other cleanups -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmZCT+kACgkQEsHwGGHe VUraaxAAl6pwAVD19vK6VtTRxgKGW8GBaGjdtSBDSFP3dhyvqd+xC1Vez5HKShMz Lmg81ZsoeAruGWDo+Av0twgGEd5OagTMHdrJsfWVQlaVXNE1IPm4tWuic4Llh+0X LSZYrBXpQH7/bsOHFTdvun8NdHVb5Ew8pvYCB06lPrlU7sjBujGsFzyQ1R6xNWmr IErYqUVtEqexNS9lo45N+1Q5Uzdb9eNnPqMDA0ZbvJEytXWHlqW3ukOjRyNls1BS HbgIqOk59xuHII/nw+GgsXant2TvJQYFJPC7CculJWp7oLZITn03rj0AMKOS7cm+ zOKDbnvQogw4mf/eVc1X6RbIq+9O5eZcBskIiRVGpFP294Axt8gEwmFcfBI2UsUF t73Z2ELHuo/iHc02Gd2y+uV98NEmluX+g4efb5ILpdMJiP9J2rl6TA0PIYUx8U3T 794We38nk1YCSZnXZOpso7y+m/lRPocALWHQdtw9Frn8UNzgjidpef8vT2O+Trp5 AYv5ucnChjcUQycMIBGFbqppwjs9vb2y1L6mh4mCB6WrxeAitUw0hjvuYQvKL+wB 0gYqOrL4Z+swYKMC+GAE5HCcQayzsURbjnyzcM4nhKGSiwpaeYKHPqAPPq+oyH18 xMc8KI3n791oeZBUhA5o1ECw5vX3FcgUfAmlYfhMTnqvo+UQALM= =gaPh -----END PGP SIGNATURE----- Merge tag 'x86_alternatives_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm alternatives updates from Borislav Petkov: - Switch the in-place instruction patching which lead to at least one weird bug with 32-bit guests, seeing stale instruction bytes, to one working on a buffer, like the rest of the alternatives code does - Add a long overdue check to the X86_FEATURE flag modifying functions to warn when former get changed in a non-compatible way after alternatives have been patched because those changes will be already wrong - Other cleanups * tag 'x86_alternatives_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/alternatives: Remove alternative_input_2() x86/alternatives: Sort local vars in apply_alternatives() x86/alternatives: Optimize optimize_nops() x86/alternatives: Get rid of __optimize_nops() x86/alternatives: Use a temporary buffer when optimizing NOPs x86/alternatives: Catch late X86_FEATURE modifiers |
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Linus Torvalds | b4864f6565 |
- Change the fixed-size buffer for MCE records to a dynamically sized
one based on the number of CPUs present in the system -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmZB9z8ACgkQEsHwGGHe VUrOxA/+Mh3eCUMzgqzXRf5PVdDUQO2BBrzQEriWU0PwPjOdqmBtx6l5hlfwAl/Q 4I200RAjCu36V4BN65xhtkdQ20mKtAFXfYlqCSp4C3Q3dxSLt8P/7nwWgDqZ/ry+ IPuB4fs4GPGoolrV7wKn2IYJLPtn44Ef9kEUH2j+Za2f6GYEdD4j0IWsD1+VZwGL jatFbmPkZQXfYwPOvN2cfF5EMq84XNo3rM82++JcwvdbrbkqO2mT4OWZ6pWylD0x tiewi3HbVKDDUItv/bTj9QtPqbYfbENHroz3gdwo066F2OZiEA5cn7lPhL05DBYH FmmicH2yNKAvZlhP/m6YAz+b6H/nLihPen1wcbe+BzJYKJJgDz87QDWrsqbOiBIr 1tamd5hVZZ+XHXLQv140BsetwwZhnrO4N4PtwZNXUw8sehreErIKyEsRy6DIXKYf nY+Z6NMopyatOnAKd2vhW2wjiAFhQvkKmM4Dlw/VEzTbg7xoXruwKCiulxNrmgnX eAOHErsv9GF+1ZlnXLoTBo+ctLS1xgDu1GvlXlxGo2Ei2WkHmyzrKVcWZoNXCSgB Mnpt3Nuzv1dAmGEnZZjotdbm4kSKn3By7pDeDbhynaSepx0G2T/4tvXiyXkoepnq wJ21MATXUOE8Qq5d+D3V4brC7avcqI8vl+tb7Qi7JK0K3Dv2Wd0= =enB0 -----END PGP SIGNATURE----- Merge tag 'ras_core_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RAS update from Borislav Petkov: - Change the fixed-size buffer for MCE records to a dynamically sized one based on the number of CPUs present in the system * tag 'ras_core_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Dynamically size space for machine check records |
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Mike Rapoport (IBM) | 14e56fb2ed |
x86/ftrace: enable dynamic ftrace without CONFIG_MODULES
Dynamic ftrace must allocate memory for code and this was impossible without CONFIG_MODULES. With execmem separated from the modules code, execmem_text_alloc() is available regardless of CONFIG_MODULES. Remove dependency of dynamic ftrace on CONFIG_MODULES and make CONFIG_DYNAMIC_FTRACE select CONFIG_EXECMEM in Kconfig. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
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Mike Rapoport (IBM) | 0cc2dc4902 |
arch: make execmem setup available regardless of CONFIG_MODULES
execmem does not depend on modules, on the contrary modules use execmem. To make execmem available when CONFIG_MODULES=n, for instance for kprobes, split execmem_params initialization out from arch/*/kernel/module.c and compile it when CONFIG_EXECMEM=y Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
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Mike Rapoport (IBM) | 223b5e57d0 |
mm/execmem, arch: convert remaining overrides of module_alloc to execmem
Extend execmem parameters to accommodate more complex overrides of module_alloc() by architectures. This includes specification of a fallback range required by arm, arm64 and powerpc, EXECMEM_MODULE_DATA type required by powerpc, support for allocation of KASAN shadow required by s390 and x86 and support for late initialization of execmem required by arm64. The core implementation of execmem_alloc() takes care of suppressing warnings when the initial allocation fails but there is a fallback range defined. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Song Liu <song@kernel.org> Tested-by: Liviu Dudau <liviu@dudau.co.uk> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
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Mike Rapoport (IBM) | 12af2b83d0 |
mm: introduce execmem_alloc() and execmem_free()
module_alloc() is used everywhere as a mean to allocate memory for code. Beside being semantically wrong, this unnecessarily ties all subsystems that need to allocate code, such as ftrace, kprobes and BPF to modules and puts the burden of code allocation to the modules code. Several architectures override module_alloc() because of various constraints where the executable memory can be located and this causes additional obstacles for improvements of code allocation. Start splitting code allocation from modules by introducing execmem_alloc() and execmem_free() APIs. Initially, execmem_alloc() is a wrapper for module_alloc() and execmem_free() is a replacement of module_memfree() to allow updating all call sites to use the new APIs. Since architectures define different restrictions on placement, permissions, alignment and other parameters for memory that can be used by different subsystems that allocate executable memory, execmem_alloc() takes a type argument, that will be used to identify the calling subsystem and to allow architectures define parameters for ranges suitable for that subsystem. No functional changes. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Song Liu <song@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
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Linus Torvalds | a5131c3fdf |
Enable shadow stacks for x32.
While we normally don't do such feature-enabling on 32-bit kernels anymore, this change is small, straightforward & tested on upstream glibc. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZByx4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1htKA/9EXRmI4498QY07EaqkrvGdzDnPnvQgHLv JoPvMM73pCY8FyOt0D/fRLeS/JvP0zGnn6HT55LeQkJVcWUIAdDhuniDBSjxS7xd BdwHzkfJn2qa6kA1ekXWS7zHY+D1hsJEq9/15gFj/q2JVfo+HyN768fHS6kohdkW aNneAbsVOJZNxmKNVXXiC69xhDNVyjFxEJ0xP7rUctjj4GvJRg14pt95//z+YnNB qKmmd1/+ul652rZzsFbDjB9PZkkixm8qALFDR7I94UWX3MYknpTcV+n/tFSykQrv z3nabF+pTHKSJDrtGVOC4ks+SofK2wwEg4vYC2mfCWtVcZfPoEfEIVum6VbmfW8J 2sr1hfydTRycA6i90U2IjbnyYCtQsXyzyHGuJI4JplDinHu+GxiQQ9xMU7nmdlA+ xXazqk8dciMpzPJY8pUv0JXurNFfq/n6BfYTYrBsBeRCm8gcyYFB7fTkJWamowWc DhXHOz/MC6BkZhgkoB1/L9i9GgMu9boCJ1vdcnUMBZfqWVlcePlspOtUtabhvF2r 8NKKLwTtdcgGswrBmVcWZhbwRuc9imK3uAoNlSIEe5jC8rlcp7F5lnpYF2DPFnYn VCeGfoQGdJyt8D+9Ag7wm9zseMRekdI8dABJW2ZVAmq810+6PSW4ToONwlqzfL63 uTcapyAC0qQ= =AqG9 -----END PGP SIGNATURE----- Merge tag 'x86-shstk-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 shadow stacks from Ingo Molnar: "Enable shadow stacks for x32. While we normally don't do such feature-enabling for 32-bit anymore, this change is small, straightforward & tested on upstream glibc" * tag 'x86-shstk-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/shstk: Enable shadow stacks for x32 |
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Linus Torvalds | 5f487cd829 |
x86/platform changes for v6.10:
- Improve the DeviceTree (OF) NUMA enumeration code to address kernel warnings & mis-mappings on DeviceTree platforms. - Migrate x86 platform drivers to the .remove_new callback API - Misc cleanups & fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZByL0RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gHaRAAkub9fLBX9s1zxkouv16YJpycqHUmKMSf YeLoRGBAXDcdy4b5exgBTFxTKQE17TAsifsjhIKF1ObAslXHDfNNPUhZ41X8M3aw m5TyZxjXQiiafWSBLki+XBhYuL/lo+9tqWmmJZqp1wd2mjyViCqUDMRtm1WRRKYt ITlIQdAETGY38lU1h/NAFzVYrSq5/XVh6dW/TQ+Sw7PMkheWVInzIh31Z5/EBtBq YvmGETGAK7gUK69TbQuqCY3Aq3Q0mC2QAAGFbeHubl7Q13q4lkSdI5D7P0Ffg+Kg 95Mg94Fo3qShRNEeOyKR5L5WSGRfDJ7Tu3LfhglDqfYkLGJU++ER9BwvSxXkdbXS CCcr4yVHz8DIqZXHzpIyOvb3J4QCCUPkIiG46hpTZX+B9g+tSDOq2M9ETJcZNgux NA4wSwJLReAo2+eH+lEZv3LwxfVPwr+LHv6KRPlY0cMu/Gfs5qdCf4DMFsJuBhTD eLMwGON3ke/FDqTZkTRWGpcR6MIV7g9LWO7SgK1q8TvucmPXFIMq6v4MLrajSuKy V5iXl3Bef5IUZ6LqnHUI1HiXpLuYKb+ruBB2h01AZrrqOWVVyNWhT9Cf2EVsw+gB CKmzcBuLpFWiyXM/mRIvPHgPzW32uBuhIq2JpbPTqaEUQ6Wj2N8kY7pw1e5w8u5C OIB+LqGBiII= =IQi+ -----END PGP SIGNATURE----- Merge tag 'x86-platform-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 platform updates from Ingo Molnar: - Improve the DeviceTree (OF) NUMA enumeration code to address kernel warnings & mis-mappings on DeviceTree platforms - Migrate x86 platform drivers to the .remove_new callback API - Misc cleanups & fixes * tag 'x86-platform-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/olpc-xo1-sci: Convert to platform remove callback returning void x86/platform/olpc-x01-pm: Convert to platform remove callback returning void x86/platform/iris: Convert to platform remove callback returning void x86/of: Change x86_dtb_parse_smp_config() to static x86/of: Map NUMA node to CPUs as per DeviceTree x86/of: Set the parse_smp_cfg for all the DeviceTree platforms by default x86/hyperv/vtl: Correct x86_init.mpparse.parse_smp_cfg assignment |
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Linus Torvalds | 963795f758 |
x86/fpu changes for v6.10:
- Fix asm() constraints & modifiers in restore_fpregs_from_fpstate() - Update comments - Robustify the free_vm86() definition Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBw6ARHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1h66w/+MBZiDW9BdUaMArOO3F2epa+E/SFmcaSO KxLvs9A606nV+qW2RhHZjYcdl5oOAF0yRyofxbVLluYPt7z8GPUIrVKPHq7BD3Es amzaD0Rq00qPa+jwrt8qsOddz2KglAkgYZJcukf5hBZ6/VfiKfDeRG3D7nTyabVp sYwM7POmB5dkBrOTdmp6ikliNvmp8tfh6AiSM3NgQ8uq0YN7tm7f5iFSulBfrRN3 Y2x6LEXOuSSEzEIO/7ju4maE6JunqWMkRWWb5yyUZKZKG69dunp4LZr5kAfi/7jV SZRO16YOZOsl5XBp4QlDv2p5xM/XD3uM8UhUSlMYL0+6i/wpEMnJpcSaffLv5wNG I6RxG8d/G1hpsUoW8ClLTWfppL450z31lmwatLa1ctnuGppcx3oxEA+vBTo3I89c fVMHvDvTs7iau2K9mmpZzhLLglnf7ZDTclyVsPrECQtB+grFHL8DNKea4nn4VInH LO9XBbckuM1ZjJt1KzGNWZbpxRBRpnNVjyyYPodD4el9IyglXzcvVNR0SGCtXB+3 Td7/RBkBmNadefckOJaT1VEGXlKOlOAKtWB+A17jpzCSoaKSzhXw/khbxIG3oYOv BRulU9r16rDzuMiDLjfFHpC4BhjDSluDuFS1Xtg+P3PZQR+LDn9msJaWFWL7pexK xhs5daRBrqs= =PO9v -----END PGP SIGNATURE----- Merge tag 'x86-fpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fpu updates from Ingo Molnar: - Fix asm() constraints & modifiers in restore_fpregs_from_fpstate() - Update comments - Robustify the free_vm86() definition * tag 'x86-fpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Update fpu_swap_kvm_fpu() uses in comments as well x86/vm86: Make sure the free_vm86(task) definition uses its parameter even in the !CONFIG_VM86 case x86/fpu: Fix AMD X86_BUG_FXSAVE_LEAK fixup |
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Linus Torvalds | ecd83bcbed |
x86/cpu changes for v6.10:
- Rework the x86 CPU vendor/family/model code: introduce the 'VFM' value that is an 8+8+8 bit concatenation of the vendor/family/model value, and add macros that work on VFM values. This simplifies the addition of new Intel models & families, and simplifies existing enumeration & quirk code. - Add support for the AMD 0x80000026 leaf, to better parse topology information. - Optimize the NUMA allocation layout of more per-CPU data structures - Improve the workaround for AMD erratum 1386 - Clear TME from /proc/cpuinfo as well, when disabled by the firmware - Improve x86 self-tests - Extend the mce_record tracepoint with the ::ppin and ::microcode fields - Implement recovery for MCE errors in TDX/SEAM non-root mode - Misc cleanups and fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBwL0RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gfuBAAkfVxMAfXvI4Vn3Em9Pix5zgvOoEshPoI Pti8+fqgKAaR/Nn+ZCEUk6nou8E6R0Lyo7yDk4aZ0zGmUwQS0IoRTvj721YojCTS Chr7butXH2xkYYQVBiJvKdHVhPBgs6jvExLyRL4WJ6s6zunS86Xka3nVRKD9QqW6 RpEc83wW9b/oSzxn/Cwzxk9RvXatLL82EMOYPL2B40Lde8EM+zoYsfOwGndGlCB2 gHpnSL1Jzry5kTeG7rromWWVp6YrDW63R2KO+DB0r7rrrtEyXtoCr7OdxruUijPB sSpzN6etRbUuH0ijMbh7EW8KlUkGBx46Y+1eRMeN/qYy0vuwP9v0vP9n/7fXLjvu FEI82W07lHjY3OvHh2FzvcHMTWaHVYqwDRLki7ortjtg53F/0l07Cbqxf2zJg+r3 jIaVCifk4qo6Rq+TvHtGcuDYi36u93UKVcfjQN1K/a2WdzJvpDL63PklzBeTno5s 7QBSG1FxEbfIXeQaf/AwfjnfzlQhI9ws1F+GuFAP7mGH8vEnDlGhLv5vsnloxcMB HnHJE1wOzq6A3ixCFreXccikfsTUgsfmrLExhVs9Er/MsKRsGfSySyFUHA4L/Ygm 6zqfgYwSJzbn5EnfPmiO1R+tNhlcAi0YENeAOle4HQTeBwqebKl+Zh3zbzpgM2I3 cppkgnY/HTQ= =Zrlk -----END PGP SIGNATURE----- Merge tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cpu updates from Ingo Molnar: - Rework the x86 CPU vendor/family/model code: introduce the 'VFM' value that is an 8+8+8 bit concatenation of the vendor/family/model value, and add macros that work on VFM values. This simplifies the addition of new Intel models & families, and simplifies existing enumeration & quirk code. - Add support for the AMD 0x80000026 leaf, to better parse topology information - Optimize the NUMA allocation layout of more per-CPU data structures - Improve the workaround for AMD erratum 1386 - Clear TME from /proc/cpuinfo as well, when disabled by the firmware - Improve x86 self-tests - Extend the mce_record tracepoint with the ::ppin and ::microcode fields - Implement recovery for MCE errors in TDX/SEAM non-root mode - Misc cleanups and fixes * tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits) x86/mm: Switch to new Intel CPU model defines x86/tsc_msr: Switch to new Intel CPU model defines x86/tsc: Switch to new Intel CPU model defines x86/cpu: Switch to new Intel CPU model defines x86/resctrl: Switch to new Intel CPU model defines x86/microcode/intel: Switch to new Intel CPU model defines x86/mce: Switch to new Intel CPU model defines x86/cpu: Switch to new Intel CPU model defines x86/cpu/intel_epb: Switch to new Intel CPU model defines x86/aperfmperf: Switch to new Intel CPU model defines x86/apic: Switch to new Intel CPU model defines perf/x86/msr: Switch to new Intel CPU model defines perf/x86/intel/uncore: Switch to new Intel CPU model defines perf/x86/intel/pt: Switch to new Intel CPU model defines perf/x86/lbr: Switch to new Intel CPU model defines perf/x86/intel/cstate: Switch to new Intel CPU model defines x86/bugs: Switch to new Intel CPU model defines x86/bugs: Switch to new Intel CPU model defines x86/cpu/vfm: Update arch/x86/include/asm/intel-family.h x86/cpu/vfm: Add new macros to work with (vendor/family/model) values ... |
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Linus Torvalds | c4273a6692 |
x86/cleanups changes for v6.10:
- Fix function prototypes to address clang function type cast warnings in the math-emu code - Reorder definitions in <asm/msr-index.h> - Remove unused code - Fix typos - Simplify #include sections Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBvHQRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1jeSBAAqPMBFEYc5nge52ONZ8bzADEPQ6pBohgO xfONNuUpjtQ/Xtnhc8FGoFf+C9pnOlf2eX2VfusqvA6M9XJDgZxu1M6QZSOHuILo 4T4opzTj7VYLbo1DQGLcPMymW/rhJNwKdRwhHr4SNIk9YcIJS7uyxtnLNvqjcCsB /iMw2/mhlXRXN1MP1Eg4YM6BXJ4qYkjx79gzKEGbq6tJgUahR37LGvw1aq+GAiap Wbo0o2jLgu8ByZXKEfUmUnW5jMR02LeUBg1OqDjaziO48df6eUi4ngaCoSA5qIew SDKZ1uq3qTOlDtGlxIGlBznM/HjvPejr+XQXKukCn+B9N62PMtR4fOS5q/4ODTD+ wQttK0rg/fLpp1zgv33ey2N0qpbUxbtxC4JkA4DPfqstO/uiQXTNJM6H68Pqr9p/ 6TuW+HYrsgUdi54X4KTEHIAGOSUP0bjJrtSP6Tzxt9+epOQl+ymHaR07a4rRn2cw SnK7CQcWsjv90PUkCsb3F7gZtYVOkb4C0ZCPn2AlSPo+y0YnBadG+S6uQ6suFwxA kX5QNf+OPmqJZz/muqGQ+c7Swc9ONPdv6RSt35nqp2vz0ugp4Q1FNUciQGfOLj2V O0KaFVcdFvlkLGgxgYlGZJKxWKeuhh+L5IHyaL5fy7nOUhJtI+djoF5ZaCfR0Ofp Piqz80R6w9I= =6pkd -----END PGP SIGNATURE----- Merge tag 'x86-cleanups-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cleanups from Ingo Molnar: - Fix function prototypes to address clang function type cast warnings in the math-emu code - Reorder definitions in <asm/msr-index.h> - Remove unused code - Fix typos - Simplify #include sections * tag 'x86-cleanups-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pci/ce4100: Remove unused 'struct sim_reg_op' x86/msr: Move ARCH_CAP_XAPIC_DISABLE bit definition to its rightful place x86/math-emu: Fix function cast warnings x86/extable: Remove unused fixup type EX_TYPE_COPY x86/rtc: Remove unused intel-mid.h x86/32: Remove unused IA32_STACK_TOP and two externs x86/head: Simplify relative include path to xen-head.S x86/fred: Fix typo in Kconfig description x86/syscall/compat: Remove ia32_unistd.h x86/syscall/compat: Remove unused macro __SYSCALL_ia32_NR x86/virt/tdx: Remove duplicate include x86/xen: Remove duplicate #include |
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Linus Torvalds | d71ec0ed03 |
x86/build changes for v6.10:
- Use -fpic to build the kexec 'purgatory' (self-contained code that runs between two kernels) - Clean up vmlinux.lds.S generation - Simplify the X86_EXTENDED_PLATFORM section of the x86 Kconfig - Misc cleanups & fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBuqIRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hCkhAAoUz4ZPgaN9mN4TvCXzhEMgb2SO8Wm/Jr IdHunF9W8q5NMQHWDK5lPsLco95HPeX/Mqq1eWbe6/oAfSpUt38+OL2rq8pjCZnm G7wC7paPIK7Onl6l2gM9D+BlWpnHq8wsdGeMyV7VhqdhGAgbv8he+IlZKSUgLyiT l8CTzppHy0U6R6UYvz+ZnOWgYevWpVvty2lxrvhTR1VmITLrBNk3AJb8+GYSuqj3 gUF4oOjiG8WvtjtLYhXw1Kf8vt577ix6iaiow00SP/A4rmWfWIN0WSBQhHcXJwVQ RDVHlNAoVJ4GY4oZU88ykuWqe5UEfMcJzI0l3nSqeiLgLpvtA3UNNdVvl+el8wU+ 181+4viNGS2owB9D+Na70BJEiJmGHHE7MfmEQEO1d9az/6Q4tXCJwKS+TymPFWYe wYMIz2bf03g+FksxljP9dgwe7enVFCnBhmmms8nfAmpACaLQVtMjElqGzIeTGckh 52scmA6hXLlTwNVpeARQ36DL6tLkcyTPO2ujrEJzsRvWOB7EbAbpDJfHOhMIFQNt M+st803WZ4tRbwrwTYTyU4F4Wt4RkNlYo820M3TDSYfdA+M6h01y3ZR53z1VDvXy NuNVlhnl3dQr//VMwHFgCv5hD+VhAs8iKqxzj0W31cChv5WgFG7IGnu70/J9V/1n 6MZasYJlKbg= =xZOX -----END PGP SIGNATURE----- Merge tag 'x86-build-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 build updates from Ingo Molnar: - Use -fpic to build the kexec 'purgatory' (the self-contained code that runs between two kernels) - Clean up vmlinux.lds.S generation - Simplify the X86_EXTENDED_PLATFORM section of the x86 Kconfig - Misc cleanups & fixes * tag 'x86-build-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Kconfig: Merge the two CONFIG_X86_EXTENDED_PLATFORM entries x86/purgatory: Switch to the position-independent small code model x86/boot: Replace __PHYSICAL_START with LOAD_PHYSICAL_ADDR x86/vmlinux.lds.S: Take __START_KERNEL out conditional definition x86/vmlinux.lds.S: Remove conditional definition of LOAD_OFFSET vmlinux.lds.h: Fix a typo in comment |
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Linus Torvalds | 7e3591453d |
Use uniform "Oops: " prefix for die() messages.
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Linus Torvalds | 9d8e0d52a2 |
x86/boot changes for v6.10:
- Move the kernel cmdline setup earlier in the boot process (again), to address a split_lock_detect= boot parameter bug. - Ignore relocations in .notes sections - Simplify boot stack setup - Re-introduce a bootloader quirk wrt. CR4 handling - Miscellaneous cleanups & fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBt20RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1jqAg//RwFDdZsxgE+2zc8x04xJuIFLLyXmEFD9 /x0QhXzLWuxJU1E8XReHnDJhPr8yDWWQZrYzU8B9wkPGPoqh42s9Gb6YHKQw++/f F2c3EjVdIBcebMufWvSTnrmQc5Env6Ka5te96arK6F76KjH7snRPV3Vl0p5aO2pO GzVWuxfhmQtw6GxX+mzFCSlv1cLQBLM72P++6b7QiT3C5kWhcieaeYdzHcekrNPL i5BdHoE8ldqRu0Un9KCLbvyA20XsVGsjSLi3mOqguoCpIVI47J+bMnJWF7xpKhHI Zyv4pL0ftOC0K9mqF+f3JS6vGlevBIsdqzjfog/oRpO/iLSMEbMj/3jv2BYFAE1l HmhWDUaUtdvb/mU1PAUzhSZl8Qsjl25vlV7mAT2w6KAr/l1Y9fZGXZU2huFnw/3H AaMoiyIUDV0OO2h6TIvuH78YKl/aq3awLbZcZ4m4XD16Eg3rzq8vHKTVGt/kIaxW /z/C0HemSD9qKDoqwevUTGNbJJfWEUrx1wNK8B4Bw/EBN9Md6IgtINKgdG68/8HW xr9iJ9L34lTAKWtjIznqsJg8nq6q8ccGMngDCoN1KbVbn2z7jQqzWvCLml/PLwsO bdTxYBearZKMsmhCwj/qEBM58X3G2lQCl4KIUGQjyO6lWGTGGLCaQiw8lDQNu54E LyFJh2rwltE= =p7K3 -----END PGP SIGNATURE----- Merge tag 'x86-boot-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 boot updates from Ingo Molnar: - Move the kernel cmdline setup earlier in the boot process (again), to address a split_lock_detect= boot parameter bug - Ignore relocations in .notes sections - Simplify boot stack setup - Re-introduce a bootloader quirk wrt CR4 handling - Miscellaneous cleanups & fixes * tag 'x86-boot-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot/64: Clear most of CR4 in startup_64(), except PAE, MCE and LA57 x86/boot: Move kernel cmdline setup earlier in the boot process (again) x86/build: Clean up arch/x86/tools/relocs.c a bit x86/boot: Ignore relocations in .notes sections in walk_relocs() too x86: Rename __{start,end}_init_task to __{start,end}_init_stack x86/boot: Simplify boot stack setup |
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Linus Torvalds | 48fc82c40b |
Locking changes for v6.10:
- Over a dozen code generation micro-optimizations for the atomic and spinlock code. - Add more __ro_after_init attributes - Robustify the lockdevent_*() macros Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZBrMMRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gSuA//YyLRTCGtH6d/fCudlzzoa14MHO/QiCv7 lgmq3Vqif/m+MW7LwQJbLrxDPJPT1mE9Ol9woOc133Cj1QZhF/HQvDAKT9ZpMoXU d8U3kuZ7tN41TJuQx6vNSCv3w5ToKeXaQJGxiT6od2Y/0QlhUKhVBSBQVtyc/ma6 o1Uhq1Qp5KPj928jiqwI0JCZJFqqLvzq/rIT38V05phHEPet4GbLMbz9ZTsw70pm xmLzGLXJQ9maziuVcmRUrctsAkbk+VhChQ9p4HrH6AcYPwyQoF+zJr7iocyzIMG2 xQqhEYShI72lcRft8hZwlrLTKZJWSAkDIxIxaQ2egzsNBwBPbRpP0mUIz3qbwJxQ fqzKGxwDmxjiX1Ib4gIVje66hp2QpPX5G1ARoeKvbrHkXxzqVuFlaQBn1+OAQ/GV mNzKADxrjalhyiMksHXbEbUNEvXCGqC2N9AOWT6XNvpLDqTJBz/wB+f9cbx3gYEO 9rXwVicWXLzUnEfbRaEjCrDeMEHMLqhaZIndgCx07JpFkkTtKLD1N9tBxFPNH+SP XK7SAsXrxwhBjGbWItfF4eOaPCey+/+kGhOPadfTg3g9zDjEBvX/YNBBw9q2CUWc JWd/gct+/Jnnkh1jdIj9yRF2xciVY+iOshHRzG+clo/PhRTwv+DwfMJ/uzn+oaSF vOT+exKA8bg= =rT48 -----END PGP SIGNATURE----- Merge tag 'locking-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - Over a dozen code generation micro-optimizations for the atomic and spinlock code - Add more __ro_after_init attributes - Robustify the lockdevent_*() macros * tag 'locking-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in PV_UNLOCK_ASM macro locking/qspinlock/x86: Micro-optimize virt_spin_lock() locking/atomic/x86: Merge __arch{,_try}_cmpxchg64_emu_local() with __arch{,_try}_cmpxchg64_emu() locking/atomic/x86: Introduce arch_try_cmpxchg64_local() locking/pvqspinlock/x86: Remove redundant CMP after CMPXCHG in __raw_callee_save___pv_queued_spin_unlock() locking/pvqspinlock: Use try_cmpxchg() in qspinlock_paravirt.h locking/pvqspinlock: Use try_cmpxchg_acquire() in trylock_clear_pending() locking/qspinlock: Use atomic_try_cmpxchg_relaxed() in xchg_tail() locking/atomic/x86: Define arch_atomic_sub() family using arch_atomic_add() functions locking/atomic/x86: Rewrite x86_32 arch_atomic64_{,fetch}_{and,or,xor}() functions locking/atomic/x86: Introduce arch_atomic64_read_nonatomic() to x86_32 locking/atomic/x86: Introduce arch_atomic64_try_cmpxchg() to x86_32 locking/atomic/x86: Introduce arch_try_cmpxchg64() for !CONFIG_X86_CMPXCHG64 locking/atomic/x86: Modernize x86_32 arch_{,try_}_cmpxchg64{,_local}() locking/atomic/x86: Correct the definition of __arch_try_cmpxchg128() x86/tsc: Make __use_tsc __ro_after_init x86/kvm: Make kvm_async_pf_enabled __ro_after_init context_tracking: Make context_tracking_key __ro_after_init jump_label,module: Don't alloc static_key_mod for __ro_after_init keys locking/qspinlock: Always evaluate lockevent* non-event parameter once |
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Paolo Bonzini | 4232da23d7 |
Merge tag 'loongarch-kvm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD
LoongArch KVM changes for v6.10 1. Add ParaVirt IPI support. 2. Add software breakpoint support. 3. Add mmio trace events support. |
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Thomas Gleixner | 5754ace3c3 |
x86/topology/amd: Ensure that LLC ID is initialized
The original topology evaluation code initialized cpu_data::topo::llc_id
with the die ID initialy and then eventually overwrite it with information
gathered from a CPUID leaf.
The conversion analysis failed to spot that particular detail and omitted
this initial assignment under the assumption that each topology evaluation
path will set it up. That assumption is mostly correct, but turns out to be
wrong in case that the CPUID leaf 0x80000006 does not provide a LLC ID.
In that case, LLC ID is invalid and as a consequence the setup of the
scheduling domain CPU masks is incorrect which subsequently causes the
scheduler core to complain about it during CPU hotplug:
BUG: arch topology borken
the CLS domain not a subset of the MC domain
Cure it by reusing legacy_set_llc() and assigning the die ID if the LLC ID
is invalid after all possible parsers have been tried.
Fixes:
|
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Shyam Sundar S K | 0e640f0a47 |
x86/amd_nb: Add new PCI IDs for AMD family 0x1a
Add the new PCI Device IDs to the MISC IDs list to support new generation of AMD 1Ah family 70h Models of processors. [ bp: Massage commit message. ] Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240510111829.969501-1-Shyam-sundar.S-k@amd.com |
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Masahiro Yamada | b1992c3772 |
kbuild: use $(src) instead of $(srctree)/$(src) for source directory
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for checked-in source files. It is merely a convention without any functional difference. In fact, $(obj) and $(src) are exactly the same, as defined in scripts/Makefile.build: src := $(obj) When the kernel is built in a separate output directory, $(src) does not accurately reflect the source directory location. While Kbuild resolves this discrepancy by specifying VPATH=$(srctree) to search for source files, it does not cover all cases. For example, when adding a header search path for local headers, -I$(srctree)/$(src) is typically passed to the compiler. This introduces inconsistency between upstream and downstream Makefiles because $(src) is used instead of $(srctree)/$(src) for the latter. To address this inconsistency, this commit changes the semantics of $(src) so that it always points to the directory in the source tree. Going forward, the variables used in Makefiles will have the following meanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source tree Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced with $(src). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> |