mirror of
https://github.com/torvalds/linux
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401 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
b96a3e9142 |
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support tracking
KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the GENERIC_IOREMAP
ioremap()/iounmap() code ("mm: ioremap: Convert architectures to take
GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency improvements
("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation, from
Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code ("Two
minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle most
file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for memmap
on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table range
API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM subsystem
documentation ("Improve mm documentation").
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Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in
add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support
tracking KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with
UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the
GENERIC_IOREMAP ioremap()/iounmap() code ("mm: ioremap: Convert
architectures to take GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency
improvements ("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation,
from Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code
("Two minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle
most file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for
memmap on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock
migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table
range API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM
subsystem documentation ("Improve mm documentation").
* tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (489 commits)
maple_tree: shrink struct maple_tree
maple_tree: clean up mas_wr_append()
secretmem: convert page_is_secretmem() to folio_is_secretmem()
nios2: fix flush_dcache_page() for usage from irq context
hugetlb: add documentation for vma_kernel_pagesize()
mm: add orphaned kernel-doc to the rst files.
mm: fix clean_record_shared_mapping_range kernel-doc
mm: fix get_mctgt_type() kernel-doc
mm: fix kernel-doc warning from tlb_flush_rmaps()
mm: remove enum page_entry_size
mm: allow ->huge_fault() to be called without the mmap_lock held
mm: move PMD_ORDER to pgtable.h
mm: remove checks for pte_index
memcg: remove duplication detection for mem_cgroup_uncharge_swap
mm/huge_memory: work on folio->swap instead of page->private when splitting folio
mm/swap: inline folio_set_swap_entry() and folio_swap_entry()
mm/swap: use dedicated entry for swap in folio
mm/swap: stop using page->private on tail pages for THP_SWAP
selftests/mm: fix WARNING comparing pointer to 0
selftests: cgroup: fix test_kmem_memcg_deletion kernel mem check
...
|
||
|
Li Zetao
|
dedf98dd1c |
s390/pci: use builtin_misc_device macro to simplify the code
Use the builtin_misc_device macro to simplify the code, which is the same as declaring with device_initcall(). Signed-off-by: Li Zetao <lizetao1@huawei.com> Acked-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20230815080833.1103609-1-lizetao1@huawei.com Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Baoquan He
|
b43b3fff04 |
s390: mm: convert to GENERIC_IOREMAP
By taking GENERIC_IOREMAP method, the generic generic_ioremap_prot(), generic_iounmap(), and their generic wrapper ioremap_prot(), ioremap() and iounmap() are all visible and available to arch. Arch needs to provide wrapper functions to override the generic versions if there's arch specific handling in its ioremap_prot(), ioremap() or iounmap(). This change will simplify implementation by removing duplicated code with generic_ioremap_prot() and generic_iounmap(), and has the equivalent functioality as before. Here, add wrapper functions ioremap_prot() and iounmap() for s390's special operation when ioremap() and iounmap(). And also replace including <asm-generic/io.h> with <asm/io.h> in arch/s390/kernel/perf_cpum_sf.c, otherwise building error will be seen because macro defined in <asm/io.h> can't be seen in perf_cpum_sf.c. Link: https://lkml.kernel.org/r/20230706154520.11257-11-bhe@redhat.com Signed-off-by: Baoquan He <bhe@redhat.com> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonas Bonn <jonas@southpole.se> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Rich Felker <dalias@libc.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Heiko Carstens
|
cada938a01 |
s390: fix various typos
Fix various typos found with codespell. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
||
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Vasily Gorbik
|
f62f8b716d |
Merge branch 'uaccess-inline-asm-cleanup' into features
Heiko Carstens says: =================== There are a couple of oddities within the s390 uaccess library functions. Therefore cleanup the whole uaccess.c file. There is no functional change, only improved readability. The output of "objdump -Dr" was always compared before/after each patch to make sure that the generated object file is identical, if that could be expected. Therefore the series also includes more patches than really required to cleanup the code. Furthermore the kunit usercopy tests also still pass. =================== Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Niklas Schnelle
|
45e5f0c017 |
s390/pci: clean up left over special treatment for function zero
Prior to commit
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||
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Niklas Schnelle
|
b881208dcd |
s390/pci: remove redundant pci_bus_add_devices() on new bus
The pci_bus_add_devices() call in zpci_bus_create_pci_bus() is without function since at this point no device could have been added to the freshly created PCI bus. Suggested-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20230306151014.60913-4-schnelle@linux.ibm.com Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
||
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Niklas Schnelle
|
ae83707f39 |
s390/pci: only add specific device in zpci_bus_scan_device()
As the name suggests zpci_bus_scan_device() is used to scan a specific device and thus pci_bus_add_device() for that device is sufficient. Furthermore move this call inside the rescan/remove locking. Suggested-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20230306151014.60913-3-schnelle@linux.ibm.com Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
||
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Niklas Schnelle
|
ab90950985 |
PCI: s390: Fix use-after-free of PCI resources with per-function hotplug
On s390 PCI functions may be hotplugged individually even when they belong to a multi-function device. In particular on an SR-IOV device VFs may be removed and later re-added. In commit |
||
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Jason Gunthorpe
|
429f27e368 |
iommu/s390: Use GFP_KERNEL in sleepable contexts
These contexts are sleepable, so use the proper annotation. The GFP_ATOMIC was added mechanically in the prior patches. Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/10-v3-76b587fe28df+6e3-iommu_map_gfp_jgg@nvidia.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
||
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Jason Gunthorpe
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d3b8282521 |
iommu/s390: Push the gfp parameter to the kmem_cache_alloc()'s
dma_alloc_cpu_table() and dma_alloc_page_table() are eventually called by iommufd through s390_iommu_map_pages() and it should not be forced to atomic. Thread the gfp parameter through the call chain starting from s390_iommu_map_pages(). Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/9-v3-76b587fe28df+6e3-iommu_map_gfp_jgg@nvidia.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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Linus Torvalds
|
b8fd76f418 |
IOMMU Updates for Linux v6.2
Including:
- Core code:
- map/unmap_pages() cleanup
- SVA and IOPF refactoring
- Clean up and document return codes from device/domain
attachment code
- AMD driver:
- Rework and extend parsing code for ivrs_ioapic, ivrs_hpet
and ivrs_acpihid command line options
- Some smaller cleanups
- Intel driver:
- Blocking domain support
- Cleanups
- S390 driver:
- Fixes and improvements for attach and aperture handling
- PAMU driver:
- Resource leak fix and cleanup
- Rockchip driver:
- Page table permission bit fix
- Mediatek driver:
- Improve safety from invalid dts input
- Smaller fixes and improvements
- Exynos driver:
- Fix driver initialization sequence
- Sun50i driver:
- Remove IOMMU_DOMAIN_IDENTITY as it has not been working
forever
- Various other fixes
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Merge tag 'iommu-updates-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
"Core code:
- map/unmap_pages() cleanup
- SVA and IOPF refactoring
- Clean up and document return codes from device/domain attachment
AMD driver:
- Rework and extend parsing code for ivrs_ioapic, ivrs_hpet and
ivrs_acpihid command line options
- Some smaller cleanups
Intel driver:
- Blocking domain support
- Cleanups
S390 driver:
- Fixes and improvements for attach and aperture handling
PAMU driver:
- Resource leak fix and cleanup
Rockchip driver:
- Page table permission bit fix
Mediatek driver:
- Improve safety from invalid dts input
- Smaller fixes and improvements
Exynos driver:
- Fix driver initialization sequence
Sun50i driver:
- Remove IOMMU_DOMAIN_IDENTITY as it has not been working forever
- Various other fixes"
* tag 'iommu-updates-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (74 commits)
iommu/mediatek: Fix forever loop in error handling
iommu/mediatek: Fix crash on isr after kexec()
iommu/sun50i: Remove IOMMU_DOMAIN_IDENTITY
iommu/amd: Fix typo in macro parameter name
iommu/mediatek: Remove unused "mapping" member from mtk_iommu_data
iommu/mediatek: Improve safety for mediatek,smi property in larb nodes
iommu/mediatek: Validate number of phandles associated with "mediatek,larbs"
iommu/mediatek: Add error path for loop of mm_dts_parse
iommu/mediatek: Use component_match_add
iommu/mediatek: Add platform_device_put for recovering the device refcnt
iommu/fsl_pamu: Fix resource leak in fsl_pamu_probe()
iommu/vt-d: Use real field for indication of first level
iommu/vt-d: Remove unnecessary domain_context_mapped()
iommu/vt-d: Rename domain_add_dev_info()
iommu/vt-d: Rename iommu_disable_dev_iotlb()
iommu/vt-d: Add blocking domain support
iommu/vt-d: Add device_block_translation() helper
iommu/vt-d: Allocate pasid table in device probe path
iommu/amd: Check return value of mmu_notifier_register()
iommu/amd: Fix pci device refcount leak in ppr_notifier()
...
|
||
|
Linus Torvalds
|
47477c84b8 |
s390 updates for 6.2 merge window
- Factor out handle_write() function and simplify 3215 console
write operation.
- When 3170 terminal emulator is connected to the 3215 console
driver the boot time could be very long due to limited buffer
space or missing operator input. Add con3215_drop command line
parameter and con3215_drop sysfs attribute file to instruct
the kernel drop console data when such conditions are met.
- Fix white space errors in 3215 console driver.
- Move enum paiext_mode definition to a header file and rename
it to paievt_mode to indicate this is now used for several
events. Rename PAI_MODE_COUNTER to PAI_MODE_COUNTING to make
consistent with PAI_MODE_SAMPLING.
- Simplify the logic of PMU pai_crypto mapped buffer reference
counter and make it consistent with PMU pai_ext.
- Rename PMU pai_crypto mapped buffer structure member users
to active_events to make it consistent with PMU pai_ext.
- Enable HUGETLB_PAGE_OPTIMIZE_VMEMMAP configuration option.
This results in saving of 12K per 1M hugetlb page (~1.2%)
and 32764K per 2G hugetlb page (~1.6%).
- Use generic serial.h, bugs.h, shmparam.h and vga.h header
files and scrap s390-specific versions.
- The generic percpu setup code does not expect the s390-like
implementation and emits a warning. To get rid of that warning
and provide sane CPU-to-node and CPU-to-CPU distance mappings
implementat a minimal version of setup_per_cpu_areas().
- Use kstrtobool() instead of strtobool() for re-IPL sysfs device
attributes.
- Avoid unnecessary lookup of a pointer to MSI descriptor when
setting IRQ affinity for a PCI device.
- Get rid of "an incompatible function type cast" warning by
changing debug_sprintf_format_fn() function prototype so it
matches the debug_format_proc_t function type.
- Remove unused info_blk_hdr__pcpus() and get_page_state()
functions.
- Get rid of clang "unused unused insn cache ops function"
warning by moving s390_insn definition to a private header.
- Get rid of clang "unused function" warning by making function
raw3270_state_final() only available if CONFIG_TN3270_CONSOLE
is enabled.
- Use kstrobool() to parse sclp_con_drop parameter to make it
identical to the con3215_drop parameter and allow passing
values like "yes" and "true".
- Use sysfs_emit() for all SCLP sysfs show functions, which is
the current standard way to generate output strings.
- Make SCLP con_drop sysfs attribute also writable and allow to
change its value during runtime. This makes SCLP console drop
handling consistent with the 3215 device driver.
- Virtual and physical addresses are indentical on s390. However,
there is still a confusion when pointers are directly casted to
physical addresses or vice versa. Use correct address converters
virt_to_phys() and phys_to_virt() for s390 channel IO drivers.
- Support for power managemant has been removed from s390 since
quite some time. Remove unused power managemant code from the
appldata device driver.
- Allow memory tools like KASAN see memory accesses from the
checksum code. Switch to GENERIC_CSUM if KASAN is enabled,
just like x86 does.
- Add support of ECKD DASDs disks so it could be used as boot
and dump devices.
- Follow checkpatch recommendations and use octal values instead
of S_IRUGO and S_IWUSR for dump device attributes in sysfs.
- Changes to vx-insn.h do not cause a recompile of C files that
use asm(".include \"asm/vx-insn.h\"\n") magic to access vector
instruction macros from inline assemblies. Add wrapper include
header file to avoid this problem.
- Use vector instruction macros instead of byte patterns to
increase register validation routine readability.
- The current machine check register validation handling does not
take into account various scenarios and might lead to killing a
wrong user process or potentially ignore corrupted FPU registers.
Simplify logic of the machine check handler and stop the whole
machine if the previous context was kerenel mode. If the previous
context was user mode, kill the current task.
- Introduce sclp_emergency_printk() function which can be used to
emit a message in emergency cases. It is supposed to be used in
cases where regular console device drivers may not work anymore,
e.g. unrecoverable machine checks.
Keep the early Service-Call Control Block so it can also be used
after initdata has been freed to allow sclp_emergency_printk()
implementation.
- In case a system will be stopped because of an unrecoverable
machine check error print the machine check interruption code
to give a hint of what went wrong.
- Move storage error checking from the assembly entry code to C
in order to simplify machine check handling. Enter the handler
with DAT turned on, which simplifies the entry code even more.
- The machine check extended save areas are allocated using
a private "nmi_save_areas" slab cache which guarantees a
required power-of-two alignment. Get rid of that cache in
favour of kmalloc().
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Merge tag 's390-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Alexander Gordeev:
- Factor out handle_write() function and simplify 3215 console write
operation
- When 3170 terminal emulator is connected to the 3215 console driver
the boot time could be very long due to limited buffer space or
missing operator input. Add con3215_drop command line parameter and
con3215_drop sysfs attribute file to instruct the kernel drop console
data when such conditions are met
- Fix white space errors in 3215 console driver
- Move enum paiext_mode definition to a header file and rename it to
paievt_mode to indicate this is now used for several events. Rename
PAI_MODE_COUNTER to PAI_MODE_COUNTING to make consistent with
PAI_MODE_SAMPLING
- Simplify the logic of PMU pai_crypto mapped buffer reference counter
and make it consistent with PMU pai_ext
- Rename PMU pai_crypto mapped buffer structure member users to
active_events to make it consistent with PMU pai_ext
- Enable HUGETLB_PAGE_OPTIMIZE_VMEMMAP configuration option. This
results in saving of 12K per 1M hugetlb page (~1.2%) and 32764K per
2G hugetlb page (~1.6%)
- Use generic serial.h, bugs.h, shmparam.h and vga.h header files and
scrap s390-specific versions
- The generic percpu setup code does not expect the s390-like
implementation and emits a warning. To get rid of that warning and
provide sane CPU-to-node and CPU-to-CPU distance mappings implementat
a minimal version of setup_per_cpu_areas()
- Use kstrtobool() instead of strtobool() for re-IPL sysfs device
attributes
- Avoid unnecessary lookup of a pointer to MSI descriptor when setting
IRQ affinity for a PCI device
- Get rid of "an incompatible function type cast" warning by changing
debug_sprintf_format_fn() function prototype so it matches the
debug_format_proc_t function type
- Remove unused info_blk_hdr__pcpus() and get_page_state() functions
- Get rid of clang "unused unused insn cache ops function" warning by
moving s390_insn definition to a private header
- Get rid of clang "unused function" warning by making function
raw3270_state_final() only available if CONFIG_TN3270_CONSOLE is
enabled
- Use kstrobool() to parse sclp_con_drop parameter to make it identical
to the con3215_drop parameter and allow passing values like "yes" and
"true"
- Use sysfs_emit() for all SCLP sysfs show functions, which is the
current standard way to generate output strings
- Make SCLP con_drop sysfs attribute also writable and allow to change
its value during runtime. This makes SCLP console drop handling
consistent with the 3215 device driver
- Virtual and physical addresses are indentical on s390. However, there
is still a confusion when pointers are directly casted to physical
addresses or vice versa. Use correct address converters
virt_to_phys() and phys_to_virt() for s390 channel IO drivers
- Support for power managemant has been removed from s390 since quite
some time. Remove unused power managemant code from the appldata
device driver
- Allow memory tools like KASAN see memory accesses from the checksum
code. Switch to GENERIC_CSUM if KASAN is enabled, just like x86 does
- Add support of ECKD DASDs disks so it could be used as boot and dump
devices
- Follow checkpatch recommendations and use octal values instead of
S_IRUGO and S_IWUSR for dump device attributes in sysfs
- Changes to vx-insn.h do not cause a recompile of C files that use
asm(".include \"asm/vx-insn.h\"\n") magic to access vector
instruction macros from inline assemblies. Add wrapper include header
file to avoid this problem
- Use vector instruction macros instead of byte patterns to increase
register validation routine readability
- The current machine check register validation handling does not take
into account various scenarios and might lead to killing a wrong user
process or potentially ignore corrupted FPU registers. Simplify logic
of the machine check handler and stop the whole machine if the
previous context was kerenel mode. If the previous context was user
mode, kill the current task
- Introduce sclp_emergency_printk() function which can be used to emit
a message in emergency cases. It is supposed to be used in cases
where regular console device drivers may not work anymore, e.g.
unrecoverable machine checks
Keep the early Service-Call Control Block so it can also be used
after initdata has been freed to allow sclp_emergency_printk()
implementation
- In case a system will be stopped because of an unrecoverable machine
check error print the machine check interruption code to give a hint
of what went wrong
- Move storage error checking from the assembly entry code to C in
order to simplify machine check handling. Enter the handler with DAT
turned on, which simplifies the entry code even more
- The machine check extended save areas are allocated using a private
"nmi_save_areas" slab cache which guarantees a required power-of-two
alignment. Get rid of that cache in favour of kmalloc()
* tag 's390-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (38 commits)
s390/nmi: get rid of private slab cache
s390/nmi: move storage error checking back to C, enter with DAT on
s390/nmi: print machine check interruption code before stopping system
s390/sclp: introduce sclp_emergency_printk()
s390/sclp: keep sclp_early_sccb
s390/nmi: rework register validation handling
s390/nmi: use vector instruction macros instead of byte patterns
s390/vx: add vx-insn.h wrapper include file
s390/ipl: use octal values instead of S_* macros
s390/ipl: add eckd dump support
s390/ipl: add eckd support
vfio/ccw: identify CCW data addresses as physical
vfio/ccw: sort out physical vs virtual pointers usage
s390/checksum: support GENERIC_CSUM, enable it for KASAN
s390/appldata: remove power management callbacks
s390/cio: sort out physical vs virtual pointers usage
s390/sclp: allow to change sclp_console_drop during runtime
s390/sclp: convert to use sysfs_emit()
s390/sclp: use kstrobool() to parse sclp_con_drop parameter
s390/3270: make raw3270_state_final() depend on CONFIG_TN3270_CONSOLE
...
|
||
|
Thomas Gleixner
|
b9ea48e9e8 |
s390/pci: Use irq_data_get_msi_desc()
No point in doing another lookup of irq_data, it's already provided as an argument. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/linux-s390/8735aoui07.ffs@tglx/ [agordeev@linux.ibm.com added Link tag] Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
||
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Niklas Schnelle
|
21c1f9021f |
s390/pci: use lock-free I/O translation updates
I/O translation tables on s390 use 8 byte page table entries and tables which are allocated lazily but only freed when the entire I/O translation table is torn down. Also each IOVA can at any time only translate to one physical address Furthermore I/O table accesses by the IOMMU hardware are cache coherent. With a bit of care we can thus use atomic updates to manipulate the translation table without having to use a global lock at all. This is done analogous to the existing I/O translation table handling code used on Intel and AMD x86 systems. Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20221109142903.4080275-6-schnelle@linux.ibm.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
||
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Niklas Schnelle
|
2ba8336dab |
iommu/s390: Use RCU to allow concurrent domain_list iteration
The s390_domain->devices list is only added to when new devices are attached but is iterated through in read-only fashion for every mapping operation as well as for I/O TLB flushes and thus in performance critical code causing contention on the s390_domain->list_lock. Fortunately such a read-mostly linked list is a standard use case for RCU. This change closely follows the example fpr RCU protected list given in Documentation/RCU/listRCU.rst. Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20221109142903.4080275-4-schnelle@linux.ibm.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
||
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Niklas Schnelle
|
59bbf59679 |
iommu/s390: Make attach succeed even if the device is in error state
If a zPCI device is in the error state while switching IOMMU domains zpci_register_ioat() will fail and we would end up with the device not attached to any domain. In this state since zdev->dma_table == NULL a reset via zpci_hot_reset_device() would wrongfully re-initialize the device for DMA API usage using zpci_dma_init_device(). As automatic recovery is currently disabled while attached to an IOMMU domain this only affects slot resets triggered through other means but will affect automatic recovery once we switch to using dma-iommu. Additionally with that switch common code expects attaching to the default domain to always work so zpci_register_ioat() should only fail if there is no chance to recover anyway, e.g. if the device has been unplugged. Improve the robustness of attach by specifically looking at the status returned by zpci_mod_fc() to determine if the device is unavailable and in this case simply ignore the error. Once the device is reset zpci_hot_reset_device() will then correctly set the domain's DMA translation tables. Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20221109142903.4080275-2-schnelle@linux.ibm.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
||
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Heiko Carstens
|
6ec803025c |
s390/pci: add missing EX_TABLE entries to __pcistg_mio_inuser()/__pcilg_mio_inuser()
For some exception types the instruction address points behind the
instruction that caused the exception. Take that into account and add
the missing exception table entry.
Cc: <stable@vger.kernel.org>
Fixes:
|
||
|
Linus Torvalds
|
03785a69ae |
s390 updates for the 6.1 merge window
- Make use of the IBM z16 processor activity instrumentation facility extension to count neural network processor assist operations: add a new PMU device driver so that perf can make use of this. - Rework memcpy_real() to avoid DAT-off mode. - Rework absolute lowcore access code. - Various small fixes and improvements all over the code. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmNB0rUACgkQjYWKoQLX FBjIwAgAkxPvjr50iK5/exlZR7S2bcEwoCKBUX+D7563SE4jQQp3o5Gt2MZ3hdL0 IKRkPPA/xRV0W7Oj57SvU4xXvxeXINoCPsQQlLrHg77L6B3TlWpmVWXjseunMyfM zhZTbv1sZ/XcdrnRwMq3P5fb8TnNHiU0/6lBz4Efi92K5NerQ0JBY7w7xbrZwiXD 2R6ZpokXNcaBBtaETpu+PWu6QXyUOpvIeT+b6DG+4/ud2GmY7KNM75l2lzgWXajh 7yHTLTkQTvUF+3jZS2JiRm9rrH/FY3X5PXVg17Q10KmzmVXp5WT75pVyDEuUq0a8 nOj2QsFSX/xDJTcPvrAWZxMuxzLtRg== =6LMp -----END PGP SIGNATURE----- Merge tag 's390-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Make use of the IBM z16 processor activity instrumentation facility extension to count neural network processor assist operations: add a new PMU device driver so that perf can make use of this. - Rework memcpy_real() to avoid DAT-off mode. - Rework absolute lowcore access code. - Various small fixes and improvements all over the code. * tag 's390-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: remove unused bus_next field from struct zpci_dev s390/cio: remove unused ccw_device_force_console() declaration s390/pai: Add support for PAI Extension 1 NNPA counters s390/mm: fix no previous prototype warnings in maccess.c s390/mm: uninline copy_oldmem_kernel() function s390/mm,ptdump: add real memory copy page markers s390/mm: rework memcpy_real() to avoid DAT-off mode s390/dump: save IPL CPU registers once DAT is available s390/pci: convert high_memory to physical address s390/smp,ptdump: add absolute lowcore markers s390/smp: rework absolute lowcore access s390/smp: call smp_reinit_ipl_cpu() before scheduler is available s390/ptdump: add missing amode31 markers s390/mm: split lowcore pages with set_memory_4k() s390/mm: remove unused access parameter from do_fault_error() s390/delay: sync comment within __delay() with reality s390: move from strlcpy with unused retval to strscpy |
||
|
Niklas Schnelle
|
2187582c36 |
s390/pci: convert high_memory to physical address
We use high_memory as a measure for amount of memory available in determining the required minimum size of our IOVA space with the assumption that one rarely maps more than the available memory for DMA. In special cases like mapping significant amounts of memory more than once this can still be tuned with the s390_iommu_apterture kernel parameter. In this use case high_memory is treated as a physical address. As high_memory is a virtual address however this means we need to convert it using virt_to_phys() before use Note that at the moment physical and virtual addresses are identical so this mismatch does not currently cause trouble. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
||
|
Pierre Morel
|
ca922fecda |
KVM: s390: pci: Hook to access KVM lowlevel from VFIO
We have a cross dependency between KVM and VFIO when using
s390 vfio_pci_zdev extensions for PCI passthrough
To be able to keep both subsystem modular we add a registering
hook inside the S390 core code.
This fixes a build problem when VFIO is built-in and KVM is built
as a module.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Fixes:
|
||
|
Linus Torvalds
|
eff0cb3d91 |
pci-v5.20-changes
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Merge tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Consolidate duplicated 'next function' scanning and extend to allow
'isolated functions' on s390, similar to existing hypervisors
(Niklas Schnelle)
Resource management:
- Implement pci_iobar_pfn() for sparc, which allows us to remove the
sparc-specific pci_mmap_page_range() and pci_mmap_resource_range().
This removes the ability to map the entire PCI I/O space using
/proc/bus/pci, but we believe that's already been broken since
v2.6.28 (Arnd Bergmann)
- Move common PCI definitions to asm-generic/pci.h and rework others
to be be more specific and more encapsulated in arches that need
them (Stafford Horne)
Power management:
- Convert drivers to new *_PM_OPS macros to avoid need for '#ifdef
CONFIG_PM_SLEEP' or '__maybe_unused' (Bjorn Helgaas)
Virtualization:
- Add ACS quirk for Broadcom BCM5750x multifunction NICs that isolate
the functions but don't advertise an ACS capability (Pavan Chebbi)
Error handling:
- Clear PCI Status register during enumeration in case firmware left
errors logged (Kai-Heng Feng)
- When we have native control of AER, enable error reporting for all
devices that support AER. Previously only a few drivers enabled
this (Stefan Roese)
- Keep AER error reporting enabled for switches. Previously we
enabled this during enumeration but immediately disabled it (Stefan
Roese)
- Iterate over error counters instead of error strings to avoid
printing junk in AER sysfs counters (Mohamed Khalfella)
ASPM:
- Remove pcie_aspm_pm_state_change() so ASPM config changes, e.g.,
via sysfs, are not lost across power state changes (Kai-Heng Feng)
Endpoint framework:
- Don't stop an EPC when unbinding an EPF from it (Shunsuke Mie)
Endpoint embedded DMA controller driver:
- Simplify and clean up support for the DesignWare embedded DMA
(eDMA) controller (Frank Li, Serge Semin)
Broadcom STB PCIe controller driver:
- Avoid config space accesses when link is down because we can't
recover from the CPU aborts these cause (Jim Quinlan)
- Look for power regulators described under Root Ports in DT and
enable them before scanning the secondary bus (Jim Quinlan)
- Disable/enable regulators in suspend/resume (Jim Quinlan)
Freescale i.MX6 PCIe controller driver:
- Simplify and clean up clock and PHY management (Richard Zhu)
- Disable/enable regulators in suspend/resume (Richard Zhu)
- Set PCIE_DBI_RO_WR_EN before writing DBI registers (Richard Zhu)
- Allow speeds faster than Gen2 (Richard Zhu)
- Make link being down a non-fatal error so controller probe doesn't
fail if there are no Endpoints connected (Richard Zhu)
Loongson PCIe controller driver:
- Add ACPI and MCFG support for Loongson LS7A (Huacai Chen)
- Avoid config reads to non-existent LS2K/LS7A devices because a
hardware defect causes machine hangs (Huacai Chen)
- Work around LS7A integrated devices that report incorrect Interrupt
Pin values (Jianmin Lv)
Marvell Aardvark PCIe controller driver:
- Add support for AER and Slot capability on emulated bridge (Pali
Rohár)
MediaTek PCIe controller driver:
- Add Airoha EN7532 to DT binding (John Crispin)
- Allow building of driver for ARCH_AIROHA (Felix Fietkau)
MediaTek PCIe Gen3 controller driver:
- Print decoded LTSSM state when the link doesn't come up (Jianjun
Wang)
NVIDIA Tegra194 PCIe controller driver:
- Convert DT binding to json-schema (Vidya Sagar)
- Add DT bindings and driver support for Tegra234 Root Port and
Endpoint mode (Vidya Sagar)
- Fix some Root Port interrupt handling issues (Vidya Sagar)
- Set default Max Payload Size to 256 bytes (Vidya Sagar)
- Fix Data Link Feature capability programming (Vidya Sagar)
- Extend Endpoint mode support to devices beyond Controller-5 (Vidya
Sagar)
Qualcomm PCIe controller driver:
- Rework clock, reset, PHY power-on ordering to avoid hangs and
improve consistency (Robert Marko, Christian Marangi)
- Move pipe_clk handling to PHY drivers (Dmitry Baryshkov)
- Add IPQ60xx support (Selvam Sathappan Periakaruppan)
- Allow ASPM L1 and substates for 2.7.0 (Krishna chaitanya chundru)
- Add support for more than 32 MSI interrupts (Dmitry Baryshkov)
Renesas R-Car PCIe controller driver:
- Convert DT binding to json-schema (Herve Codina)
- Add Renesas RZ/N1D (R9A06G032) to rcar-gen2 DT binding and driver
(Herve Codina)
Samsung Exynos PCIe controller driver:
- Fix phy-exynos-pcie driver so it follows the 'phy_init() before
phy_power_on()' PHY programming model (Marek Szyprowski)
Synopsys DesignWare PCIe controller driver:
- Simplify and clean up the DWC core extensively (Serge Semin)
- Fix an issue with programming the ATU for regions that cross a 4GB
boundary (Serge Semin)
- Enable the CDM check if 'snps,enable-cdm-check' exists; previously
we skipped it if 'num-lanes' was absent (Serge Semin)
- Allocate a 32-bit DMA-able page to be MSI target instead of using a
driver data structure that may not be addressable with 32-bit
address (Will McVicker)
- Add DWC core support for more than 32 MSI interrupts (Dmitry
Baryshkov)
Xilinx Versal CPM PCIe controller driver:
- Add DT binding and driver support for Versal CPM5 Gen5 Root Port
(Bharat Kumar Gogada)"
* tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (150 commits)
PCI: imx6: Support more than Gen2 speed link mode
PCI: imx6: Set PCIE_DBI_RO_WR_EN before writing DBI registers
PCI: imx6: Reformat suspend callback to keep symmetric with resume
PCI: imx6: Move the imx6_pcie_ltssm_disable() earlier
PCI: imx6: Disable clocks in reverse order of enable
PCI: imx6: Do not hide PHY driver callbacks and refine the error handling
PCI: imx6: Reduce resume time by only starting link if it was up before suspend
PCI: imx6: Mark the link down as non-fatal error
PCI: imx6: Move regulator enable out of imx6_pcie_deassert_core_reset()
PCI: imx6: Turn off regulator when system is in suspend mode
PCI: imx6: Call host init function directly in resume
PCI: imx6: Disable i.MX6QDL clock when disabling ref clocks
PCI: imx6: Propagate .host_init() errors to caller
PCI: imx6: Collect clock enables in imx6_pcie_clk_enable()
PCI: imx6: Factor out ref clock disable to match enable
PCI: imx6: Move imx6_pcie_clk_disable() earlier
PCI: imx6: Move imx6_pcie_enable_ref_clk() earlier
PCI: imx6: Move PHY management functions together
PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure_type() earlier
PCI: imx6: Convert to NOIRQ_SYSTEM_SLEEP_PM_OPS()
...
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Niklas Schnelle
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960ac36264 |
s390/pci: allow zPCI zbus without a function zero
Currently the zPCI code blocks PCI bus creation and probing of a zPCI zbus unless there is a PCI function with devfn 0. This is always the case for the PCI functions with hidden RID, but may keep PCI functions from a multi-function PCI device with RID information invisible until the function 0 becomes visible. Worse, as a PCI bus is necessary to even present a PCI hotplug slot, even that remains invisible. With the probing of these so-called isolated PCI functions enabled for s390 in common code, this restriction is no longer necessary. On network cards with multiple ports and a PF per port this also allows using each port on its own while still providing the physical PCI topology information in the devfn needed to associate VFs with their parent PF. Link: https://lore.kernel.org/r/20220628143100.3228092-6-schnelle@linux.ibm.com Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> |
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Matthew Rosato
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09340b2fca |
KVM: s390: pci: add routines to start/stop interpretive execution
These routines will be invoked at the time an s390x vfio-pci device is associated with a KVM (or when the association is removed), allowing the zPCI device to enable or disable load/store intepretation mode; this requires the host zPCI device to inform firmware of the unique token (GISA designation) that is associated with the owning KVM. Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Acked-by: Pierre Morel <pmorel@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-17-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Matthew Rosato
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3c5a1b6f0a |
KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding
These routines will be wired into a kvm ioctl in order to respond to requests to enable / disable a device for Adapter Event Notifications / Adapter Interuption Forwarding. Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Acked-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-16-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Matthew Rosato
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98b1d33dac |
KVM: s390: pci: do initial setup for AEN interpretation
Initial setup for Adapter Event Notification Interpretation for zPCI passthrough devices. Specifically, allocate a structure for forwarding of adapter events and pass the address of this structure to firmware. Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-13-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Matthew Rosato
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d103846776 |
s390/pci: stash dtsm and maxstbl
Store information about what IOAT designation types are supported by underlying hardware as well as the largest store block size allowed. These values will be needed by passthrough. Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-10-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Matthew Rosato
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c68468ed34 |
s390/pci: stash associated GISA designation
For passthrough devices, we will need to know the GISA designation of the guest if interpretation facilities are to be used. Setup to stash this in the zdev and set a default of 0 (no GISA designation) for now; a subsequent patch will set a valid GISA designation for passthrough devices. Also, extend mpcific routines to specify this stashed designation as part of the mpcific command. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-9-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Matthew Rosato
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062f002485 |
s390/pci: externalize the SIC operation controls and routine
A subsequent patch will be issuing SIC from KVM -- export the necessary routine and make the operation control definitions available from a header. Because the routine will now be exported, let's rename __zpci_set_irq_ctrl to zpci_set_irq_ctrl and get rid of the zero'd iib wrapper function of the same name. Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-8-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
||
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Matthew Rosato
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932b646727 |
s390/airq: allow for airq structure that uses an input vector
When doing device passthrough where interrupts are being forwarded from host to guest, we wish to use a pinned section of guest memory as the vector (the same memory used by the guest as the vector). To accomplish this, add a new parameter for airq_iv_create which allows passing an existing vector to be used instead of allocating a new one. The caller is responsible for ensuring the vector is pinned in memory as well as for unpinning the memory when the vector is no longer needed. A subsequent patch will use this new parameter for zPCI interpretation. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-7-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
||
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Matthew Rosato
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d2197485a1 |
s390/airq: pass more TPI info to airq handlers
A subsequent patch will introduce an airq handler that requires additional TPI information beyond directed vs floating, so pass the entire tpi_info structure via the handler. Only pci actually uses this information today, for the other airq handlers this is effectively a no-op. Reviewed-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20220606203325.110625-6-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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Niklas Schnelle
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34fb0e7034 |
s390/pci: add error record for CC 2 retries
Currently it is not detectable from within Linux when PCI instructions are retried because of a busy condition. Detecting such conditions and especially how long they lasted can however be quite useful in problem determination. This patch enables this by adding an s390dbf error log when a CC 2 is first encountered as well as after the retried instruction. Despite being unlikely it may be possible that these added debug messages drown out important other messages so allow setting the debug level in zpci_err_insn*() and set their level to 1 so they can be filtered out if need be. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Niklas Schnelle
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cde8833e40 |
s390/pci: add PCI access type and length to error records
Currently when a PCI instruction returns a non-zero condition code it can be very hard to tell from the s390dbf logs what kind of instruction was executed. In case of PCI memory I/O (MIO) instructions it is even impossible to tell if we attempted a load, store or block store or how large the access was because only the address is logged. Improve this by adding an indicator byte for the instruction type to the error record and also store the length of the access for MIO instructions where this can not be deduced from the request. We use the following indicator values: - 'l': PCI load - 's': PCI store - 'b': PCI store block - 'L': PCI load (MIO) - 'S': PCI store (MIO) - 'B': PCI store block (MIO) - 'M': MPCIFC - 'R': RPCIT Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Niklas Schnelle
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723b5a9d2b |
s390/pci: don't log availability events as errors
Availability events are logged in s390dbf in s390dbf/pci_error/hex_ascii
even though they don't indicate an error condition.
They have also become redundant as commit
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Niklas Schnelle
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52c79e636a |
s390/pci: make better use of zpci_dbg() levels
While the zpci_dbg() macro offers a level parameter this is currently largely unused. The only instance with higher importance than 3 is the UID checking change debug message which is not actually more important as the UID uniqueness guarantee is already exposed in sysfs so this should rather be 3 as well. On the other hand the "add ..." message which shows what devices are visible at the lowest level is essential during problem determination. By setting its level to 1, lowering the debug level can act as a filter to only show the available functions. On the error side the default level is set to 6 while all existing messages are printed at level 0. This is inconsistent and means there is no room for having messages be invisible on the default level so instead set the default level to 3 like for errors matching the default for debug messages. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Niklas Schnelle
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7dcfe50f58 |
s390/pci: rename get_zdev_by_bus() to zdev_from_bus()
Getting a zpci_dev via get_zdev_by_bus() uses the long lived reference held in zbus->function[devfn]. This is accounted for in pcibios_add_device() and pcibios_release_device(). Therefore there is no need to increment the reference count in get_zdev_by_bus() as is done for get_zdev_by_fid(). Instead callers must not access the device after pcibios_release_device() was called which is necessary for common PCI code anyway. With this though the very similar naming may be misleading so rename get_zdev_by_bus() to zdev_from_bus() emphasizing that we are directly referencing the zdev via the bus. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Niklas Schnelle
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c122383d22 |
s390/pci: improve zpci_dev reference counting
Currently zpci_dev uses kref based reference counting but only accounts
for one original reference plus one reference from an added pci_dev to
its underlying zpci_dev. Counting just the original reference worked
until the pci_dev reference was added in commit
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Niklas Schnelle
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6c2797cd51 |
s390/pci: make zpci_set_irq()/zpci_clear_irq() static
Commit
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Heiko Carstens
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d09a307fde |
s390/extable: move EX_TABLE define to asm-extable.h
Follow arm64 and riscv and move the EX_TABLE define to asm-extable.h which is a lot less generic than the current linkage.h. Also make sure that all files which contain EX_TABLE usages actually include the new header file. This should make sure that the files always compile and there won't be any random compile breakage due to other header file dependencies. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Linus Torvalds
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feb7a43de5 |
Rework of the MSI interrupt infrastructure:
Treewide cleanup and consolidation of MSI interrupt handling in
preparation for further changes in this area which are necessary to:
- address existing shortcomings in the VFIO area
- support the upcoming Interrupt Message Store functionality which
decouples the message store from the PCI config/MMIO space
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Merge tag 'irq-msi-2022-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull MSI irq updates from Thomas Gleixner:
"Rework of the MSI interrupt infrastructure.
This is a treewide cleanup and consolidation of MSI interrupt handling
in preparation for further changes in this area which are necessary
to:
- address existing shortcomings in the VFIO area
- support the upcoming Interrupt Message Store functionality which
decouples the message store from the PCI config/MMIO space"
* tag 'irq-msi-2022-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (94 commits)
genirq/msi: Populate sysfs entry only once
PCI/MSI: Unbreak pci_irq_get_affinity()
genirq/msi: Convert storage to xarray
genirq/msi: Simplify sysfs handling
genirq/msi: Add abuse prevention comment to msi header
genirq/msi: Mop up old interfaces
genirq/msi: Convert to new functions
genirq/msi: Make interrupt allocation less convoluted
platform-msi: Simplify platform device MSI code
platform-msi: Let core code handle MSI descriptors
bus: fsl-mc-msi: Simplify MSI descriptor handling
soc: ti: ti_sci_inta_msi: Remove ti_sci_inta_msi_domain_free_irqs()
soc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation
NTB/msi: Convert to msi_on_each_desc()
PCI: hv: Rework MSI handling
powerpc/mpic_u3msi: Use msi_for_each-desc()
powerpc/fsl_msi: Use msi_for_each_desc()
powerpc/pasemi/msi: Convert to msi_on_each_dec()
powerpc/cell/axon_msi: Convert to msi_on_each_desc()
powerpc/4xx/hsta: Rework MSI handling
...
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Niklas Schnelle
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7b2932162f |
s390/pci: simplify __pciwb_mio() inline asm
The PCI Write Barrier instruction ignores the registers encoded in it. There is thus no need to explicitly set the register to zero or to associate it with a variable at all. In the resulting binary this removes an unnecessary lghi and it makes the code simpler. Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Thomas Gleixner
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2ca5e908d0 |
s390/pci: Rework MSI descriptor walk
Replace the about to vanish iterators and make use of the filtering. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20211206210748.305656158@linutronix.de |
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Thomas Gleixner
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ae72f31567 |
PCI/MSI: Make arch_restore_msi_irqs() less horrible.
Make arch_restore_msi_irqs() return a boolean which indicates whether the core code should restore the MSI message or not. Get rid of the indirection in x86. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # PCI Link: https://lore.kernel.org/r/20211206210224.485668098@linutronix.de |
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Niklas Schnelle
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568de506e3 |
s390/pci: use physical addresses in DMA tables
The entries in the DMA translation tables for our IOMMU must specify physical addresses of either the next level table or the final page to be mapped for DMA. Currently however the code simply passes the virtual addresses of both. On the other hand we still need to walk the tables via their virtual addresses so we need to do a phys_to_virt() when setting the entries and a virt_to_phys() when getting them. Similarly when passing the I/O translation anchor to the hardware we must also specify its physical address. As the DMA and IOMMU APIs we are implementing already use the correct phys_addr_t type for the address to be mapped let's also thread this through instead of treating it as just an unsigned long. Note: this currently doesn't fix a real bug, since virtual addresses are indentical to physical ones. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Niklas Schnelle
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4e4dc65ab5 |
s390/pci: use phys_to_virt() for AIBVs/DIBVs
The adapter and directed interrupt bit vectors need to be referenced in the FIB with their physical not their virtual address. So use virt_to_phys() as approrpiate. Note: this currently doesn't fix a real bug, since virtual addresses are indentical to physical ones. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Niklas Schnelle
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4cdf2f4e24 |
s390/pci: implement minimal PCI error recovery
When the platform detects an error on a PCI function or a service action has been performed it is put in the error state and an error event notification is provided to the OS. Currently we treat all error event notifications the same and simply set pdev->error_state = pci_channel_io_perm_failure requiring user intervention such as use of the recover attribute to get the device usable again. Despite requiring a manual step this also has the disadvantage that the device is completely torn down and recreated resulting in higher level devices such as a block or network device being recreated. In case of a block device this also means that it may need to be removed and added to a software raid even if that could otherwise survive with a temporary degradation. This is of course not ideal more so since an error notification with PEC 0x3A indicates that the platform already performed error recovery successfully or that the error state was caused by a service action that is now finished. At least in this case we can assume that the error state can be reset and the function made usable again. So as not to have the disadvantage of a full tear down and recreation we need to coordinate this recovery with the driver. Thankfully there is already a well defined recovery flow for this described in Documentation/PCI/pci-error-recovery.rst. The implementation of this is somewhat straight forward and simplified by the fact that our recovery flow is defined per PCI function. As a reset we use the newly introduced zpci_hot_reset_device() which also takes the PCI function out of the error state. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Acked-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Niklas Schnelle
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da995d538d |
s390/pci: implement reset_slot for hotplug slot
This is done by adding a zpci_hot_reset_device() call which does a low level reset of the PCI function without changing its higher level function state. This way it can be used while the zPCI function is bound to a driver and with DMA tables being controlled either through the IOMMU or DMA APIs which is prohibited when using zpci_disable_device() as that drop existing DMA translations. As this reset, unlike a normal FLR, also calls zpci_clear_irq() we need to implement arch_restore_msi_irqs() and make sure we re-enable IRQs for the PCI function if they were previously disabled. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Niklas Schnelle
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4fe2049770 |
s390/pci: refresh function handle in iomap
The function handle of a PCI function is updated when disabling or enabling it as well as when the function's availability changes or it enters the error state. Until now this only occurred either while there is no struct pci_dev associated with the function yet or the function became unavailable. This meant that leaving a stale function handle in the iomap either didn't happen because there was no iomap yet or it lead to errors on PCI access but so would the correct disabled function handle. In the future a CLP Set PCI Function Disable/Enable cycle during PCI device recovery may be done while the device is bound to a driver. In this case we must update the iomap associated with the now-stale function handle to ensure that the resulting zPCI instruction references an accurate function handle. Since the function handle is accessed by the PCI accessor helpers without locking use READ_ONCE()/WRITE_ONCE() to mark this access and prevent compiler optimizations that would move the load/store. With that infrastructure in place let's also properly update the function handle in the existing cases. This makes sure that in the future debugging of a zPCI function access through the handle will show an up to date handle reducing the chance of confusion. Also it makes sure we have one single place where a zPCI function handle is updated after initialization. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Linus Torvalds
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0b707e572a |
s390 updates for the 5.16 merge window
- Add support for ftrace with direct call and ftrace direct call samples. - Add support for kernel command lines longer than current 896 bytes and make its length configurable. - Add support for BEAR enhancement facility to improve last breaking event instruction tracking. - Add kprobes sanity checks and testcases to prevent kprobe in the mid of an instruction. - Allow concurrent access to /dev/hwc for the CPUMF users. - Various ftrace / jump label improvements. - Convert unwinder tests to KUnit. - Add s390_iommu_aperture kernel parameter to tweak the limits on concurrently usable DMA mappings. - Add ap.useirq AP module option which can be used to disable interrupt use. - Add add_disk() error handling support to block device drivers. - Drop arch specific and use generic implementation of strlcpy and strrchr. - Several __pa/__va usages fixes. - Various cio, crypto, pci, kernel doc and other small fixes and improvements all over the code. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmGFW6EACgkQjYWKoQLX FBg20Qf/UbohgnKnE6vxbbH3sNTlI2dk3Cw4z3IobcsZgqXAu6AFLgLQGLk/X07F DIyUdrgSgCzLIEKLqrLrFXIOMIK44zAGaurIltNt7IrnWWlA+/YVD+YeL2gHwccq wT7KXRcrVMZQ1z18djJQ45DpPUC8ErBdL6+P+ftHck90YGFZsfMA5S7jf8X1h08U IlqdPTmY8t4unKHWVpHbxx9b+xrUuV6KTEXADsllpMV2jQoTLdDECd3vmefYR6tR 3lssgop1m/RzH5OCqvia5Sy2D5fOQObNWDMakwOkVMxOD43lmGCTHstzS2Uo2OFE QcY79lfZ5NrzKnenUdE5Fd0XJ9kSwQ== =k0Ab -----END PGP SIGNATURE----- Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for ftrace with direct call and ftrace direct call samples. - Add support for kernel command lines longer than current 896 bytes and make its length configurable. - Add support for BEAR enhancement facility to improve last breaking event instruction tracking. - Add kprobes sanity checks and testcases to prevent kprobe in the mid of an instruction. - Allow concurrent access to /dev/hwc for the CPUMF users. - Various ftrace / jump label improvements. - Convert unwinder tests to KUnit. - Add s390_iommu_aperture kernel parameter to tweak the limits on concurrently usable DMA mappings. - Add ap.useirq AP module option which can be used to disable interrupt use. - Add add_disk() error handling support to block device drivers. - Drop arch specific and use generic implementation of strlcpy and strrchr. - Several __pa/__va usages fixes. - Various cio, crypto, pci, kernel doc and other small fixes and improvements all over the code. [ Merge fixup as per https://lore.kernel.org/all/YXAqZ%2FEszRisunQw@osiris/ ] * tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (63 commits) s390: make command line configurable s390: support command lines longer than 896 bytes s390/kexec_file: move kernel image size check s390/pci: add s390_iommu_aperture kernel parameter s390/spinlock: remove incorrect kernel doc indicator s390/string: use generic strlcpy s390/string: use generic strrchr s390/ap: function rework based on compiler warning s390/cio: make ccw_device_dma_* more robust s390/vfio-ap: s390/crypto: fix all kernel-doc warnings s390/hmcdrv: fix kernel doc comments s390/ap: new module option ap.useirq s390/cpumf: Allow multiple processes to access /dev/hwc s390/bitops: return true/false (not 1/0) from bool functions s390: add support for BEAR enhancement facility s390: introduce nospec_uses_trampoline() s390: rename last_break to pgm_last_break s390/ptrace: add last_break member to pt_regs s390/sclp: sort out physical vs virtual pointers usage s390/setup: convert start and end initrd pointers to virtual ... |
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Linus Torvalds
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0c5c62ddf8 |
pci-v5.16-changes
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Merge tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Conserve IRQs by setting up portdrv IRQs only when there are users
(Jan Kiszka)
- Rework and simplify _OSC negotiation for control of PCIe features
(Joerg Roedel)
- Remove struct pci_dev.driver pointer since it's redundant with the
struct device.driver pointer (Uwe Kleine-König)
Resource management:
- Coalesce contiguous host bridge apertures from _CRS to accommodate
BARs that cover more than one aperture (Kai-Heng Feng)
Sysfs:
- Check CAP_SYS_ADMIN before parsing user input (Krzysztof
Wilczyński)
- Return -EINVAL consistently from "store" functions (Krzysztof
Wilczyński)
- Use sysfs_emit() in endpoint "show" functions to avoid buffer
overruns (Kunihiko Hayashi)
PCIe native device hotplug:
- Ignore Link Down/Up caused by resets during error recovery so
endpoint drivers can remain bound to the device (Lukas Wunner)
Virtualization:
- Avoid bus resets on Atheros QCA6174, where they hang the device
(Ingmar Klein)
- Work around Pericom PI7C9X2G switch packet drop erratum by using
store and forward mode instead of cut-through (Nathan Rossi)
- Avoid trying to enable AtomicOps on VFs; the PF setting applies to
all VFs (Selvin Xavier)
MSI:
- Document that /sys/bus/pci/devices/.../irq contains the legacy INTx
interrupt or the IRQ of the first MSI (not MSI-X) vector (Barry
Song)
VPD:
- Add pci_read_vpd_any() and pci_write_vpd_any() to access anywhere
in the possible VPD space; use these to simplify the cxgb3 driver
(Heiner Kallweit)
Peer-to-peer DMA:
- Add (not subtract) the bus offset when calculating DMA address
(Wang Lu)
ASPM:
- Re-enable LTR at Downstream Ports so they don't report Unsupported
Requests when reset or hot-added devices send LTR messages
(Mingchuang Qiao)
Apple PCIe controller driver:
- Add driver for Apple M1 PCIe controller (Alyssa Rosenzweig, Marc
Zyngier)
Cadence PCIe controller driver:
- Return success when probe succeeds instead of falling into error
path (Li Chen)
HiSilicon Kirin PCIe controller driver:
- Reorganize PHY logic and add support for external PHY drivers
(Mauro Carvalho Chehab)
- Support PERST# GPIOs for HiKey970 external PEX 8606 bridge (Mauro
Carvalho Chehab)
- Add Kirin 970 support (Mauro Carvalho Chehab)
- Make driver removable (Mauro Carvalho Chehab)
Intel VMD host bridge driver:
- If IOMMU supports interrupt remapping, leave VMD MSI-X remapping
enabled (Adrian Huang)
- Number each controller so we can tell them apart in
/proc/interrupts (Chunguang Xu)
- Avoid building on UML because VMD depends on x86 bare metal APIs
(Johannes Berg)
Marvell Aardvark PCIe controller driver:
- Define macros for PCI_EXP_DEVCTL_PAYLOAD_* (Pali Rohár)
- Set Max Payload Size to 512 bytes per Marvell spec (Pali Rohár)
- Downgrade PIO Response Status messages to debug level (Marek Behún)
- Preserve CRS SV (Config Request Retry Software Visibility) bit in
emulated Root Control register (Pali Rohár)
- Fix issue in configuring reference clock (Pali Rohár)
- Don't clear status bits for masked interrupts (Pali Rohár)
- Don't mask unused interrupts (Pali Rohár)
- Avoid code repetition in advk_pcie_rd_conf() (Marek Behún)
- Retry config accesses on CRS response (Pali Rohár)
- Simplify emulated Root Capabilities initialization (Pali Rohár)
- Fix several link training issues (Pali Rohár)
- Fix link-up checking via LTSSM (Pali Rohár)
- Fix reporting of Data Link Layer Link Active (Pali Rohár)
- Fix emulation of W1C bits (Marek Behún)
- Fix MSI domain .alloc() method to return zero on success (Marek
Behún)
- Read entire 16-bit MSI vector in MSI handler, not just low 8 bits
(Marek Behún)
- Clear Root Port I/O Space, Memory Space, and Bus Master Enable bits
at startup; PCI core will set those as necessary (Pali Rohár)
- When operating as a Root Port, set class code to "PCI Bridge"
instead of the default "Mass Storage Controller" (Pali Rohár)
- Add emulation for PCI_BRIDGE_CTL_BUS_RESET since aardvark doesn't
implement this per spec (Pali Rohár)
- Add emulation of option ROM BAR since aardvark doesn't implement
this per spec (Pali Rohár)
MediaTek MT7621 PCIe controller driver:
- Add MediaTek MT7621 PCIe host controller driver and DT binding
(Sergio Paracuellos)
Qualcomm PCIe controller driver:
- Add SC8180x compatible string (Bjorn Andersson)
- Add endpoint controller driver and DT binding (Manivannan
Sadhasivam)
- Restructure to use of_device_get_match_data() (Prasad Malisetty)
- Add SC7280-specific pcie_1_pipe_clk_src handling (Prasad Malisetty)
Renesas R-Car PCIe controller driver:
- Remove unnecessary includes (Geert Uytterhoeven)
Rockchip DesignWare PCIe controller driver:
- Add DT binding (Simon Xue)
Socionext UniPhier Pro5 controller driver:
- Serialize INTx masking/unmasking (Kunihiko Hayashi)
Synopsys DesignWare PCIe controller driver:
- Run dwc .host_init() method before registering MSI interrupt
handler so we can deal with pending interrupts left by bootloader
(Bjorn Andersson)
- Clean up Kconfig dependencies (Andy Shevchenko)
- Export symbols to allow more modular drivers (Luca Ceresoli)
TI DRA7xx PCIe controller driver:
- Allow host and endpoint drivers to be modules (Luca Ceresoli)
- Enable external clock if present (Luca Ceresoli)
TI J721E PCIe driver:
- Disable PHY when probe fails after initializing it (Christophe
JAILLET)
MicroSemi Switchtec management driver:
- Return error to application when command execution fails because an
out-of-band reset has cleared the device BARs, Memory Space Enable,
etc (Kelvin Cao)
- Fix MRPC error status handling issue (Kelvin Cao)
- Mask out other bits when reading of management VEP instance ID
(Kelvin Cao)
- Return EOPNOTSUPP instead of ENOTSUPP from sysfs show functions
(Kelvin Cao)
- Add check of event support (Logan Gunthorpe)
Miscellaneous:
- Remove unused pci_pool wrappers, which have been replaced by
dma_pool (Cai Huoqing)
- Use 'unsigned int' instead of bare 'unsigned' (Krzysztof
Wilczyński)
- Use kstrtobool() directly, sans strtobool() wrapper (Krzysztof
Wilczyński)
- Fix some sscanf(), sprintf() format mismatches (Krzysztof
Wilczyński)
- Update PCI subsystem information in MAINTAINERS (Krzysztof
Wilczyński)
- Correct some misspellings (Krzysztof Wilczyński)"
* tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (137 commits)
PCI: Add ACS quirk for Pericom PI7C9X2G switches
PCI: apple: Configure RID to SID mapper on device addition
iommu/dart: Exclude MSI doorbell from PCIe device IOVA range
PCI: apple: Implement MSI support
PCI: apple: Add INTx and per-port interrupt support
PCI: kirin: Allow removing the driver
PCI: kirin: De-init the dwc driver
PCI: kirin: Disable clkreq during poweroff sequence
PCI: kirin: Move the power-off code to a common routine
PCI: kirin: Add power_off support for Kirin 960 PHY
PCI: kirin: Allow building it as a module
PCI: kirin: Add MODULE_* macros
PCI: kirin: Add Kirin 970 compatible
PCI: kirin: Support PERST# GPIOs for HiKey970 external PEX 8606 bridge
PCI: apple: Set up reference clocks when probing
PCI: apple: Add initial hardware bring-up
PCI: of: Allow matching of an interrupt-map local to a PCI device
of/irq: Allow matching of an interrupt-map local to an interrupt controller
irqdomain: Make of_phandle_args_to_fwspec() generally available
PCI: Do not enable AtomicOps on VFs
...
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