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f3d44f18b0
mirror_ubuntu-kernels/arch/x86/kernel/cpu
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Reinette Chatre f3d44f18b0 x86/resctrl: Support CPUID enumeration of MBM counter width 
The original Memory Bandwidth Monitoring (MBM) architectural
definition defines counters of up to 62 bits in the
IA32_QM_CTR MSR while the first-generation MBM implementation
uses statically defined 24 bit counters.

Expand the MBM CPUID enumeration properties to include the MBM
counter width. The previously undefined EAX output register contains,
in bits [7:0], the MBM counter width encoded as an offset from
24 bits. Enumerating this property is only specified for Intel
CPUs.

Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/afa3af2f753f6bc301fb743bc8944e749cb24afa.1588715690.git.reinette.chatre@intel.com
2020-05-06 18:02:41 +02:00
..
mce x86 entry code updates: 2020-03-30 19:14:28 -07:00
microcode x86/microcode/intel: Issue the revision updated message only on the BSP 2019-10-01 16:06:35 +02:00
mtrr proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
resctrl x86/resctrl: Support CPUID enumeration of MBM counter width 2020-05-06 18:02:41 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
acrn.c x86/acrn: Use HYPERVISOR_CALLBACK_VECTOR for ACRN guest upcall vector 2019-06-11 21:31:31 +02:00
amd.c x86/resctrl: Query LLC monitoring properties once during boot 2020-05-06 17:58:08 +02:00
aperfmperf.c x86/cpu: Disable frequency requests via aperfmperf IPI for nohz_full CPUs 2019-06-22 17:23:48 +02:00
bugs.c x86/bugs: Move enum taa_mitigations to bugs.c 2019-12-14 16:06:33 +01:00
cacheinfo.c x86/cacheinfo: Fix a -Wtype-limits warning 2019-06-19 19:21:32 +02:00
centaur.c x86/cpu: Remove redundant cpu_detect_cache_sizes() call 2020-01-20 16:32:35 +01:00
common.c x86/resctrl: Query LLC monitoring properties once during boot 2020-05-06 17:58:08 +02:00
cpu.h x86/intel: Initialize IA32_FEAT_CTL MSR at boot 2020-01-13 17:45:45 +01:00
cpuid-deps.c x86/cpufeatures: Enable a new AVX512 CPU feature 2019-07-22 10:38:25 +02:00
cyrix.c x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors 2019-03-21 12:28:50 +01:00
feat_ctl.c x86/cpu: Fix a -Wmissing-prototypes warning for init_ia32_feat_ctl() 2020-03-23 12:01:59 +01:00
hygon.c x86: Remove X86_FEATURE_MFENCE_RDTSC 2019-07-22 12:00:51 +02:00
hypervisor.c x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable 2019-07-17 08:09:59 +02:00
intel_epb.c x86: intel_epb: Do not build when CONFIG_PM is unset 2019-05-30 10:58:36 +02:00
intel_pconfig.c x86/pconfig: Detect PCONFIG targets 2018-03-12 12:10:54 +01:00
intel.c x86/resctrl: Query LLC monitoring properties once during boot 2020-05-06 17:58:08 +02:00
Makefile x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_* 2020-01-13 18:36:02 +01:00
match.c x86/cpu: Add consistent CPU match macros 2020-03-24 21:17:50 +01:00
mkcapflags.sh x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_* 2020-01-13 18:36:02 +01:00
mshyperv.c x86/Hyper-V: Report crash register data or kmsg before running crash kernel 2020-04-11 17:19:06 +01:00
perfctr-watchdog.c x86/events: Add Hygon Dhyana support to PMU infrastructure 2018-09-27 18:28:57 +02:00
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: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_* 2020-01-13 18:36:02 +01:00
rdrand.c x86/rdrand: Sanity-check RDRAND output 2019-10-01 19:55:32 +02:00
scattered.c x86/mm/pat: Rename <asm/pat.h> => <asm/memtype.h> 2019-12-10 10:12:55 +01:00
topology.c x86/mm/pat: Rename <asm/pat.h> => <asm/memtype.h> 2019-12-10 10:12:55 +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
tsx.c Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 12:46:42 -08:00
umc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
umwait.c x86/cpu: Move prototype for get_umwait_control_msr() to a global location 2020-02-17 19:32:45 +01:00
vmware.c x86/vmware: Use bool type for vmw_sched_clock 2020-03-24 10:29:22 +01:00
zhaoxin.c x86/cpu: Remove redundant cpu_detect_cache_sizes() call 2020-01-20 16:32:35 +01:00