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linux/arch/x86/kernel
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James Morse 48dbe31a24 x86/resctrl: Add per-rmid arch private storage for overflow and chunks 
A renamed __rmid_read() is intended as the function that an
architecture agnostic resctrl filesystem driver can use to
read a value in bytes from a counter. Currently the function returns
the MBM values in chunks directly from hardware. For bandwidth
counters the resctrl filesystem uses this to calculate the number of
bytes ever seen.

MPAM's scaling of counters can be changed at runtime, reducing the
resolution but increasing the range. When this is changed the prev_msr
values need to be converted by the architecture code.

Add an array for per-rmid private storage. The prev_msr and chunks
values will move here to allow resctrl_arch_rmid_read() to always
return the number of bytes read by this counter without assistance
from the filesystem. The values are moved in later patches when
the overflow and correction calls are moved into __rmid_read().

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Jamie Iles <quic_jiles@quicinc.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Xin Hao <xhao@linux.alibaba.com>
Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20220902154829.30399-14-james.morse@arm.com
2022-09-22 17:46:09 +02:00
..
acpi ACPI: CPPC: Fix enabling CPPC on AMD systems with shared memory 2022-07-13 21:13:14 +02:00
apic Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
cpu x86/resctrl: Add per-rmid arch private storage for overflow and chunks 2022-09-22 17:46:09 +02:00
fpu x86/fpu: Add a helper to prepare AMX state for low-power CPU idle 2022-07-19 18:46:15 +02:00
kprobes x86/kprobes: Fix JNG/JNLE emulation 2022-08-14 11:27:17 +02:00
.gitignore
alternative.c x86/alternative: Report missing return thunk details 2022-07-20 19:24:53 +02:00
amd_gart_64.c x86: remove the IOMMU table infrastructure 2022-04-18 07:21:10 +02:00
amd_nb.c x86/amd_nb: Add AMD PCI IDs for SMN communication 2022-07-20 17:35:40 +02:00
aperture_64.c x86: remove the IOMMU table infrastructure 2022-04-18 07:21:10 +02:00
apm_32.c x86/ibt: Disable IBT around firmware 2022-03-15 10:32:40 +01:00
asm-offsets.c KVM: VMX: Prevent RSB underflow before vmenter 2022-06-27 10:34:00 +02:00
asm-offsets_32.c
asm-offsets_64.c KVM: x86: Support the vCPU preemption check with nopvspin and realtime hint 2022-04-02 05:41:21 -04:00
audit_64.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
bootflag.c
check.c
cpuid.c
crash.c x86/crash: Fix minor typo/bug in debug message 2022-04-13 19:39:54 +02:00
crash_core_32.c
crash_core_64.c
crash_dump_32.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
crash_dump_64.c vmcore: convert read_from_oldmem() to take an iov_iter 2022-04-29 14:37:59 -07:00
devicetree.c Devicetree updates for v5.16: 2021-11-02 22:22:13 -07:00
doublefault_32.c exit/doublefault: Remove apparently bogus comment about rewind_stack_do_exit 2021-10-20 13:09:43 -05:00
dumpstack.c x86: remove __range_not_ok() 2022-02-25 09:36:05 +01:00
dumpstack_32.c
dumpstack_64.c x86/mm/64: Improve stack overflow warnings 2021-09-21 13:57:43 +02:00
e820.c x86/kexec: Carry forward IMA measurement log on kexec 2022-07-01 15:22:16 +02:00
early-quirks.c drm/i915/rpl-p: Add PCI IDs 2022-04-19 17:14:09 -07:00
early_printk.c usb: early: xhci-dbc: Remove duplicate keep parsing 2022-03-15 18:20:34 +01:00
ebda.c
eisa.c
espfix_64.c random: handle archrandom with multiple longs 2022-07-25 13:26:14 +02:00
ftrace.c Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
ftrace_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
ftrace_64.S x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage 2022-06-06 11:50:22 -07:00
head32.c
head64.c x86: Clear .brk area at early boot 2022-07-01 11:11:34 +02:00
head_32.S x86/asm/32: Fix ANNOTATE_UNRET_SAFE use on 32-bit 2022-07-13 12:43:26 +02:00
head_64.S objtool: Add entry UNRET validation 2022-06-27 10:34:00 +02:00
hpet.c rtc: Check return value from mc146818_get_time() 2021-12-16 21:50:06 +01:00
hw_breakpoint.c
i8237.c
i8253.c
i8259.c x86: Avoid magic number with ELCR register accesses 2021-08-10 23:31:43 +02:00
idt.c x86/traps: Add #VE support for TDX guest 2022-04-07 08:27:51 -07:00
io_delay.c
ioport.c
irq.c x86/irq: Ensure PI wakeup handler is unregistered before module unload 2021-10-22 12:45:35 -04:00
irq_32.c x86/softirq: Disable softirq stacks on PREEMPT_RT 2021-09-27 12:28:32 +02:00
irq_64.c
irq_work.c
irqflags.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
irqinit.c
itmt.c x86/sched: Decrease further the priorities of SMT siblings 2021-10-05 15:51:59 +02:00
jailhouse.c
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kdebugfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kexec-bzimage64.c integrity-v6.0 2022-08-02 15:21:18 -07:00
kgdb.c
ksysfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kvm.c x86: kvm: remove NULL check before kfree 2022-06-20 06:22:04 -04:00
kvmclock.c x86/kvm: Don't waste kvmclock memory if there is nopv parameter 2022-04-13 13:37:19 -04:00
ldt.c memcg: enable accounting for ldt_struct objects 2021-09-03 09:58:13 -07:00
machine_kexec_32.c
machine_kexec_64.c x86/kexec: fix memory leak of elf header buffer 2022-06-01 15:57:16 -07:00
Makefile x86/build: Remove unused OBJECT_FILES_NON_STANDARD_test_nx.o 2022-07-11 08:53:28 +02:00
mmconf-fam10h_64.c
module.c This was a fairly quiet cycle for the locking subsystem: 2022-08-01 12:15:27 -07:00
mpparse.c x86: Avoid magic number with ELCR register accesses 2021-08-10 23:31:43 +02:00
msr.c
nmi.c x86/nmi: Make register_nmi_handler() more robust 2022-05-17 09:25:25 +02:00
nmi_selftest.c
paravirt-spinlocks.c
paravirt.c x86/ibt,paravirt: Sprinkle ENDBR 2022-03-15 10:32:36 +01:00
pci-dma.c swiotlb: merge swiotlb-xen initialization into swiotlb 2022-04-18 07:21:13 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c
pmem.c x86/pmem: Fix platform-device leak in error path 2022-06-20 18:01:16 +02:00
probe_roms.c x86/kernel: Validate ROM memory before accessing when SEV-SNP is active 2022-04-06 13:23:09 +02:00
process.c - Remove the vendor check when selecting MWAIT as the default idle state 2022-08-01 09:49:29 -07:00
process.h x86: Snapshot thread flags 2021-12-01 00:06:43 +01:00
process_32.c - Remove all the code around GS switching on 32-bit now that it is not 2022-05-23 18:42:07 -07:00
process_64.c x86/prctl: Remove pointless task argument 2022-05-13 12:56:28 +02:00
ptrace.c x86/32: Remove lazy GS macros 2022-04-14 14:09:43 +02:00
pvclock.c
quirks.c
reboot.c x86: Use do_kernel_power_off() 2022-05-19 19:30:31 +02:00
reboot_fixups_32.c
relocate_kernel_32.S x86/kexec: Disable RET on kexec 2022-07-09 13:12:32 +02:00
relocate_kernel_64.S x86/kexec: Disable RET on kexec 2022-07-09 13:12:32 +02:00
resource.c x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions" 2022-06-17 14:24:14 -05:00
rethook.c x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regs 2022-03-28 19:38:51 -07:00
rtc.c
setup.c x86/setup: Use rng seeds from setup_data 2022-07-11 09:59:31 +02:00
setup_percpu.c mm: percpu: add generic pcpu_populate_pte() function 2022-01-20 08:52:52 +02:00
sev-shared.c Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV" 2022-07-27 18:09:13 +02:00
sev.c x86/sev: Mark snp_abort() noreturn 2022-08-25 15:54:03 +02:00
sev_verify_cbit.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
signal.c x86/32: Remove lazy GS macros 2022-04-14 14:09:43 +02:00
signal_compat.c signal: Deliver SIGTRAP on perf event asynchronously if blocked 2022-04-22 12:14:05 +02:00
smp.c
smpboot.c x86/cacheinfo: move shared cache map definitions 2022-07-17 17:31:40 -07:00
stacktrace.c x86: remove __range_not_ok() 2022-02-25 09:36:05 +01:00
static_call.c x86/static_call: Serialize __static_call_fixup() properly 2022-07-12 14:23:32 +02:00
step.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-05-11 14:34:28 -05:00
sys_ia32.c
sys_x86_64.c x86/mm: Cleanup the control_va_addr_alignment() __setup handler 2022-05-04 18:20:42 +02:00
tboot.c x86/boot/tboot: Move tboot_force_iommu() to Intel IOMMU 2022-07-15 10:21:30 +02:00
time.c
tls.c
tls.h
topology.c drivers/base/node: consolidate node device subsystem initialization in node_dev_init() 2022-03-22 15:57:10 -07:00
trace.c trace/osnoise: Fix an ifdef comment 2021-10-25 23:02:36 -04:00
trace_clock.c
tracepoint.c x86/traceponit: Fix comment about irq vector tracepoints 2022-05-26 22:03:52 -04:00
traps.c - A bunch of changes towards streamlining low level asm helpers' calling 2022-05-23 18:08:46 -07:00
tsc.c x86/tsc: Be consistent about use_tsc_delay() 2022-03-15 18:20:33 +01:00
tsc_msr.c
tsc_sync.c x86/tsc: Add a timer to make sure TSC_adjust is always checked 2021-12-02 00:40:35 +01:00
umip.c x86/umip: Downgrade warning messages to debug loglevel 2021-09-25 13:23:28 +02:00
unwind_frame.c x86/unwind: Recover kretprobe trampoline entry 2021-09-30 21:24:07 -04:00
unwind_guess.c x86/unwind: Recover kretprobe trampoline entry 2021-09-30 21:24:07 -04:00
unwind_orc.c x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry 2022-08-21 12:19:32 +02:00
uprobes.c
verify_cpu.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
vm86_32.c x86/32: Remove lazy GS macros 2022-04-14 14:09:43 +02:00
vmlinux.lds.S Just when you thought that all the speculation bugs were addressed and 2022-07-11 18:15:25 -07:00
vsmp_64.c
x86_init.c x86/mm/cpa: Generalize __set_memory_enc_pgtable() 2022-02-23 19:14:29 +01:00