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c7d314f386e987be8b51eeb7dd947756ae23f6b6
linux/arch/x86/kernel
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Yazen Ghannam c7d314f386 x86/MCE: Make the number of MCA banks a per-CPU variable 
The number of MCA banks is provided per logical CPU. Historically, this
number has been the same across all CPUs, but this is not an
architectural guarantee. Future AMD systems may have MCA bank counts
that vary between logical CPUs in a system.

This issue was partially addressed in

  006c077041 ("x86/mce: Handle varying MCA bank counts")

by allocating structures using the maximum number of MCA banks and by
saving the maximum MCA bank count in a system as the global count. This
means that some extra structures are allocated. Also, this means that
CPUs will spend more time in the #MC and other handlers checking extra
MCA banks.

Thus, define the number of MCA banks as a per-CPU variable.

 [ bp: Make mce_num_banks an unsigned int. ]

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "x86@kernel.org" <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190607201752.221446-5-Yazen.Ghannam@amd.com
2019-06-11 15:23:09 +02:00
..
acpi
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
apic
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 223
2019-05-30 11:29:55 -07:00
cpu
x86/MCE: Make the number of MCA banks a per-CPU variable
2019-06-11 15:23:09 +02:00
fpu
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kprobes
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
.gitignore
…
alternative.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
amd_gart_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 213
2019-05-30 11:29:54 -07:00
amd_nb.c
x86/amd_nb: Add PCI device IDs for family 17h, model 30h
2018-11-07 21:36:09 +01:00
apb_timer.c
…
aperture_64.c
x86/gart: Exclude GART aperture from kcore
2019-03-23 12:11:49 +01:00
apm_32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
2019-05-24 17:39:02 +02:00
asm-offsets_32.c
x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler
2018-07-20 01:11:36 +02:00
asm-offsets_64.c
x86/irq/64: Split the IRQ stack into its own pages
2019-04-17 15:37:02 +02:00
asm-offsets.c
x86/kernel: Fix more -Wmissing-prototypes warnings
2018-12-08 12:24:35 +01:00
audit_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bootflag.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
check.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
cpuid.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142
2019-05-30 11:25:17 -07:00
crash_dump_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash_dump_64.c
x86: Fix various typos in comments
2018-12-03 10:49:13 +01:00
crash.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
devicetree.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
doublefault.c
x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
2017-12-17 13:59:55 +01:00
dumpstack_32.c
x86/irq/32: Rename hard/softirq_stack to hard/softirq_stack_ptr
2019-04-17 15:24:18 +02:00
dumpstack_64.c
x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr
2019-04-17 15:27:10 +02:00
dumpstack.c
x86/process: Don't mix user/kernel regs in 64bit __show_regs()
2018-09-06 14:33:12 +02:00
e820.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
early_printk.c
efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
2019-02-04 08:27:30 +01:00
early-quirks.c
x86/gpu: add ElkhartLake to gen11 early quirks
2019-04-01 10:29:32 -07:00
ebda.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
eisa.c
x86/EISA: Don't probe EISA bus for Xen PV guests
2018-09-11 23:36:50 +02:00
espfix_64.c
x86/espfix: Document use of _PAGE_GLOBAL
2018-04-09 18:27:33 +02:00
ftrace_32.S
ftrace/x86: Remove mcount support
2019-05-10 12:33:09 -04:00
ftrace_64.S
ftrace/x86: Remove mcount support
2019-05-10 12:33:09 -04:00
ftrace.c
Merge tag 'trace-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2019-05-15 16:05:47 -07:00
head32.c
x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header")
2018-11-20 09:43:10 +01:00
head64.c
x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header")
2018-11-20 09:43:10 +01:00
head_32.S
x86/pgtable/32: Allocate 8k page-tables when PTI is enabled
2018-07-20 01:11:41 +02:00
head_64.S
x86/irq/64: Split the IRQ stack into its own pages
2019-04-17 15:37:02 +02:00
hpet.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
hw_breakpoint.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
i8237.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
i8253.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
i8259.c
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-05 09:53:13 +02:00
idt.c
x86/exceptions: Disconnect IST index and stack order
2019-04-17 15:01:09 +02:00
ima_arch.c
x86/ima: Check EFI_RUNTIME_SERVICES before using
2019-05-19 20:27:12 -04:00
io_delay.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioport.c
x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm()
2018-04-02 20:16:12 +02:00
irq_32.c
x86/irq/32: Handle irq stack allocation failure proper
2019-04-17 15:31:42 +02:00
irq_64.c
x86/irq/64: Remove stack overflow debug code
2019-04-17 15:41:48 +02:00
irq_work.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
irqflags.S
x86/paravirt: Make native_save_fl() extern inline
2018-07-03 10:56:27 +02:00
irqinit.c
x86/irq/32: Handle irq stack allocation failure proper
2019-04-17 15:31:42 +02:00
itmt.c
x86/headers: Remove duplicate #includes
2017-12-12 11:32:24 +01:00
jailhouse.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
jump_label.c
x86/jump-label: Remove support for custom text poker
2019-04-30 12:37:55 +02:00
kdebugfs.c
…
kexec-bzimage64.c
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-03-10 17:32:04 -07:00
kgdb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
2019-05-24 17:39:02 +02:00
ksysfs.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
kvm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 19
2019-05-21 11:28:46 +02:00
kvmclock.c
x86: kvmguest: use TSC clocksource if invariant TSC is exposed
2019-02-20 22:48:52 +01:00
ldt.c
x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
2019-04-08 12:13:34 +02:00
livepatch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
machine_kexec_32.c
x86/kexec: Allocate 8k PGDs for PTI
2018-07-30 13:53:48 +02:00
machine_kexec_64.c
x86/kdump: Export the SME mask to vmcoreinfo
2019-01-11 16:09:25 +01:00
Makefile
treewide: prefix header search paths with $(srctree)/
2019-05-18 11:49:57 +09:00
mmconf-fam10h_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
mpparse.c
x86/mm: Don't leak kernel addresses
2019-03-19 12:10:56 +01:00
msr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142
2019-05-30 11:25:17 -07:00
nmi_selftest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nmi.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
paravirt_patch_32.c
x86/paravirt: Remove unused _paravirt_ident_32
2018-10-30 09:55:31 +01:00
paravirt_patch_64.c
x86/paravirt: Remove unused _paravirt_ident_32
2018-10-30 09:55:31 +01:00
paravirt-spinlocks.c
x86/paravirt: Use a single ops structure
2018-09-03 16:50:35 +02:00
paravirt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
pci-calgary_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
pci-dma.c
x86/dma: Remove the x86_dma_fallback_dev hack
2019-04-08 17:52:46 +02:00
pci-iommu_table.c
x86/iommu: Use NULL instead of 0
2018-08-02 14:33:19 +02:00
pci-swiotlb.c
dma-direct: merge swiotlb_dma_ops into the dma_direct code
2018-12-13 21:06:17 +01:00
pcspeaker.c
x86/platform/pcspeaker: Use PTR_ERR_OR_ZERO() to fix ptr_ret.cocci warning
2018-07-24 09:46:42 +02:00
perf_regs.c
perf/x86: Support outputting XMM registers
2019-04-16 12:19:36 +02:00
platform-quirks.c
x86/i8237: Register device based on FADT legacy boot flag
2018-04-27 16:44:29 +02:00
pmem.c
resource: Provide resource struct in resource walk callback
2017-11-07 15:35:57 +01:00
probe_roms.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process_32.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-07 10:24:10 -07:00
process_64.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
process.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-07 10:24:10 -07:00
process.h
x86/speculation: Change misspelled STIPB to STIBP
2018-12-06 11:49:15 +01:00
ptrace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
pvclock.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
quirks.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
reboot_fixups_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
reboot.c
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 15:32:35 -07:00
relocate_kernel_32.S
…
relocate_kernel_64.S
x86/kexec: Make kexec (mostly) work in 5-level paging mode
2018-01-31 08:39:40 +01:00
resource.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rtc.c
x86: Convert x86_platform_ops to timespec64
2018-05-19 14:03:14 +02:00
setup_percpu.c
x86/irq/64: Split the IRQ stack into its own pages
2019-04-17 15:37:02 +02:00
setup.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
signal_compat.c
signal: Add TRAP_UNK si_code for undiagnosted trap exceptions
2018-04-25 10:40:56 -05:00
signal.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-07 10:24:10 -07:00
smp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82
2019-05-24 17:37:52 +02:00
smpboot.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82
2019-05-24 17:37:52 +02:00
stacktrace.c
x86/stacktrace: Use common infrastructure
2019-04-29 12:37:57 +02:00
step.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sys_x86_64.c
x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT
2018-11-01 12:59:25 +01:00
sysfb_efi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sysfb_simplefb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sysfb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tboot.c
iommu/vtd: Cleanup dma_remapping.h header
2018-11-12 14:22:56 +01:00
tce_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
time.c
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-23 19:07:25 +01:00
tls.c
x86/ldt: Make the LDT mapping RO
2017-12-23 21:13:01 +01:00
tls.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193
2019-05-30 11:29:21 -07:00
topology.c
x86/topology: Make DEBUG_HOTPLUG_CPU0 pr_info() more descriptive
2019-04-19 19:42:57 +02:00
trace_clock.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracepoint.c
x86/kernel: Fix more -Wmissing-prototypes warnings
2018-12-08 12:24:35 +01:00
traps.c
x86/speculation/mds: Revert CPU buffer clear on double fault exit
2019-05-16 09:05:11 +02:00
tsc_msr.c
x86/cpu: Sanitize FAM6_ATOM naming
2018-10-02 10:14:32 +02:00
tsc_sync.c
Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-11-13 19:07:38 -08:00
tsc.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
umip.c
signal/x86: Use force_sig_fault where appropriate
2018-09-21 15:30:54 +02:00
unwind_frame.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
unwind_guess.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
unwind_orc.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
uprobes.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
verify_cpu.S
x86/boot: Annotate verify_cpu() as a callable function
2017-09-28 09:39:03 +02:00
vm86_32.c
x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
2019-04-08 12:13:34 +02:00
vmlinux.lds.S
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 16:13:31 -07:00
vsmp_64.c
x86/vsmp: Remove dependency on pv_irq_ops
2018-11-06 21:35:11 +01:00
x86_init.c
x86/acpi, x86/boot: Take RSDP address for boot params if available
2018-10-10 10:44:22 +02:00