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ae8b787543
linux/arch/x86/kernel/cpu
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Borislav Petkov ae8b787543 x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR 
The kernel accesses IC_CFG MSR (0xc0011021) on AMD because it
checks whether the way access filter is enabled on some F15h
models, and, if so, disables it.

kvm doesn't handle that MSR access and complains about it, which
can get really noisy in dmesg when one starts kvm guests all the
time for testing. And it is useless anyway - guest kernel
shouldn't be doing such changes anyway so tell it that that
filter is disabled.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1448273546-2567-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-11-24 09:15:54 +01:00
..
mcheck x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init() 2015-11-01 11:26:14 +01:00
microcode x86/cpu: Unify CPU family, model, stepping calculation 2015-11-24 09:15:54 +01:00
mtrr x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del() 2015-08-28 10:09:28 +02:00
.gitignore
amd.c x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR 2015-11-24 09:15:54 +01:00
bugs_64.c
bugs.c x86/fpu: Move various internal function prototypes to fpu/internal.h 2015-05-19 15:47:48 +02:00
centaur.c
common.c x86/cpu: Unify CPU family, model, stepping calculation 2015-11-24 09:15:54 +01:00
cpu.h x86/cpu: Restore MSR_IA32_ENERGY_PERF_BIAS after resume 2015-07-21 07:51:38 +02:00
cyrix.c
hypervisor.c hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guests 2015-05-05 18:27:43 +01:00
intel_cacheinfo.c perf/core, perf/x86: Change needlessly global functions and a variable to static 2015-09-28 08:09:52 +02:00
intel_pt.h perf/x86/intel/pt: Clean up files of Intel Processor Trace 2015-08-12 11:43:22 +02:00
intel.c x86/cpu/intel: Enable X86_FEATURE_NONSTOP_TSC_S3 for Merrifield 2015-11-07 10:37:30 +01:00
Makefile perf/x86: Add Intel cstate PMUs support 2015-10-06 17:31:51 +02:00
match.c
mkcapflags.sh x86/build: Fix mkcapflags.sh bash-ism 2015-02-19 02:21:00 +01:00
mshyperv.c x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case 2015-09-30 07:44:15 +02:00
perf_event_amd_ibs.c perf/x86/amd/ibs: Convert force_ibs_eilvt_setup() to void 2015-02-18 17:01:46 +01:00
perf_event_amd_iommu.c cpumask: factor out show_cpumap into separate helper function 2014-11-07 11:45:00 -08:00
perf_event_amd_iommu.h
perf_event_amd_uncore.c cpumask: factor out show_cpumap into separate helper function 2014-11-07 11:45:00 -08:00
perf_event_amd.c perf/x86: Add 'index' param to get_event_constraint() callback 2015-04-02 17:33:10 +02:00
perf_event_intel_bts.c perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems 2015-09-13 11:27:22 +02:00
perf_event_intel_cqm.c perf/x86/intel/cqm: Do not access cpu_data() from CPU_UP_PREPARE handler 2015-08-12 11:37:23 +02:00
perf_event_intel_cstate.c perf/x86: Add Intel cstate PMUs support 2015-10-06 17:31:51 +02:00
perf_event_intel_ds.c perf/x86/intel/ds: Work around BTS leaking kernel addresses 2015-09-13 11:27:21 +02:00
perf_event_intel_lbr.c perf/x86: Add support for PERF_SAMPLE_BRANCH_CALL 2015-10-20 10:30:53 +02:00
perf_event_intel_pt.c perf/x86/intel/pt: Fix KVM warning due to doing rdmsr() before the CPUID test 2015-09-13 11:27:23 +02:00
perf_event_intel_rapl.c perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro 2015-11-12 09:44:25 +01:00
perf_event_intel_uncore_nhmex.c perf/x86/uncore: Fix coccinelle warnings 2014-08-13 07:51:09 +02:00
perf_event_intel_uncore_snb.c perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore 2015-10-06 17:31:51 +02:00
perf_event_intel_uncore_snbep.c perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore 2015-10-06 17:31:51 +02:00
perf_event_intel_uncore.c perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore 2015-10-06 17:31:51 +02:00
perf_event_intel_uncore.h perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore 2015-10-06 17:31:51 +02:00
perf_event_intel.c perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask 2015-09-18 09:20:23 +02:00
perf_event_knc.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
perf_event_msr.c arch/x86/kernel/cpu/perf_event_msr.c: use sign_extend64() for sign extension 2015-11-06 17:50:42 -08:00
perf_event_p4.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
perf_event_p6.c
perf_event.c perf/core: Drop PERF_EVENT_TXN 2015-09-13 11:27:30 +02:00
perf_event.h Merge branch 'perf/urgent' into perf/core, to pick up fixes before applying new changes 2015-09-18 09:24:01 +02:00
perfctr-watchdog.c
powerflags.c
proc.c x86: Replace cpu_**_mask() with topology_**_cpumask() 2015-05-27 15:22:17 +02:00
rdrand.c x86, rdrand: When nordrand is specified, disable RDSEED as well 2014-05-11 20:25:20 -07:00
scattered.c x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag 2015-09-23 09:57:24 +02:00
topology.c
transmeta.c
umc.c
vmware.c