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fbf96cf904
linux/arch/x86/kernel/cpu
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Borislav Petkov fbf96cf904 x86/MCE/AMD: Read MCx_MISC block addresses on any CPU 
We used rdmsr_safe_on_cpu() to make sure we're reading the proper CPU's
MISC block addresses. However, that caused trouble with CPU hotplug due to
the _on_cpu() helper issuing an IPI while IRQs are disabled.

But we don't have to do that: the block addresses are the same on any CPU
so we can read them on any CPU. (What practically happens is, we read them
on the BSP and cache them, and for later reads, we service them from the
cache).

Suggested-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2018-05-19 15:21:46 +02:00
..
mcheck x86/MCE/AMD: Read MCx_MISC block addresses on any CPU 2018-05-19 15:21:46 +02:00
microcode x86/microcode: Do not exit early from __reload_late() 2018-04-24 09:48:22 +02:00
mtrr x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-15 01:15:52 +01:00
.gitignore
amd.c x86/jailhouse: Allow to use PCI_MMCONFIG without ACPI 2018-03-08 12:30:39 +01:00
aperfmperf.c x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
bugs.c x86/speculation: Use IBRS if available before calling into firmware 2018-02-20 09:38:33 +01:00
centaur.c Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
common.c x86/cpu: Restore CPUID_8000_0008_EBX reload 2018-05-02 16:44:38 +02:00
cpu.h x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
cpuid-deps.c x86/cpuid: Switch to 'static const' specifier 2018-03-08 12:23:42 +01:00
cyrix.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-15 01:15:52 +01:00
hypervisor.c x86/jailhouse: Add infrastructure for running in non-root cell 2018-01-14 21:11:54 +01:00
intel_cacheinfo.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_pconfig.c x86/pconfig: Detect PCONFIG targets 2018-03-12 12:10:54 +01:00
intel_rdt_ctrlmondata.c x86/intel_rdt: Fix a silent failure when writing zero value schemata 2017-11-12 09:01:40 +01:00
intel_rdt_monitor.c x86/intel_rdt/cqm: Make integer rmid_limbo_count static 2017-10-05 13:20:32 +02:00
intel_rdt_rdtgroup.c x86/intel_rdt: Fix incorrect returned value when creating rdgroup sub-directory in resctrl file system 2018-02-23 08:03:21 +01:00
intel_rdt.c Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
intel_rdt.h x86/intel_rdt: Enable L2 CDP in MSR IA32_L2_QOS_CFG 2018-01-18 09:33:31 +01:00
intel.c x86/cpu/intel: Add missing TLB cpuid values 2018-04-26 21:42:44 +02:00
Makefile x86/pconfig: Detect PCONFIG targets 2018-03-12 12:10:54 +01:00
match.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mkcapflags.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mshyperv.c ARM: 2018-04-09 11:42:31 -07:00
perfctr-watchdog.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
powerflags.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
proc.c x86/cpu: Change type of x86_cache_size variable to unsigned int 2018-02-15 01:15:53 +01:00
rdrand.c x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h 2016-06-08 12:41:20 -07:00
scattered.c Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-01 15:04:17 +01:00
topology.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
transmeta.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
umc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmware.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00