Borislav Petkov 78ce241099 x86/MCE/AMD: Cache SMCA MISC block addresses ...

... into a global, two-dimensional array and service subsequent reads from
that cache to avoid rdmsr_on_cpu() calls during CPU hotplug (IPIs with IRQs
disabled).

In addition, this fixes a KASAN slab-out-of-bounds read due to wrong usage
of the bank->blocks pointer.

Fixes: 27bd595027 ("x86/mce/AMD: Get address from already initialized block")
Reported-by: Johannes Hirte <johannes.hirte@datenkhaos.de>
Tested-by: Johannes Hirte <johannes.hirte@datenkhaos.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Yazen Ghannam <yazen.ghannam@amd.com>
Link: http://lkml.kernel.org/r/20180414004230.GA2033@probook

2018-05-19 15:19:30 +02:00

..

mcheck

x86/MCE/AMD: Cache SMCA MISC block addresses

2018-05-19 15:19:30 +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

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

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