diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2016-10-22 06:19:54 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-10-26 23:12:38 +0200 |
| commit | 113c60970cf41723891e3a1b303517eaf8510bb5 (patch) | |
| tree | 1aed5fa2b48172497e0623c75643a3040f22ec25 /arch/x86/include/asm/intel_rdt_common.h | |
| parent | 78e99b4a2b9afb1c304259fcd4a1c71ca97e3acd (diff) | |
x86/intel_rdt: Add Haswell feature discovery
Some Haswell generation CPUs support RDT, but they don't enumerate this via
CPUID. Use rdmsr_safe() and wrmsr_safe() to probe the MSRs on cpu model 63
(INTEL_FAM6_HASWELL_X)
Move the relevant defines into a common header file which is shared between
RDT/CQM and RDT/Allocation to avoid duplication.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: "Tony Luck" <tony.luck@intel.com>
Cc: "David Carrillo-Cisneros" <davidcc@google.com>
Cc: "Sai Prakhya" <sai.praneeth.prakhya@intel.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>
Cc: "Stephane Eranian" <eranian@google.com>
Cc: "Dave Hansen" <dave.hansen@intel.com>
Cc: "Shaohua Li" <shli@fb.com>
Cc: "Nilay Vaish" <nilayvaish@gmail.com>
Cc: "Vikas Shivappa" <vikas.shivappa@linux.intel.com>
Cc: "Ingo Molnar" <mingo@elte.hu>
Cc: "Borislav Petkov" <bp@suse.de>
Cc: "H. Peter Anvin" <h.peter.anvin@intel.com>
Link: http://lkml.kernel.org/r/1477142405-32078-8-git-send-email-fenghua.yu@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/intel_rdt_common.h')
| -rw-r--r-- | arch/x86/include/asm/intel_rdt_common.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/intel_rdt_common.h b/arch/x86/include/asm/intel_rdt_common.h new file mode 100644 index 000000000000..e6e15cfd083f --- /dev/null +++ b/arch/x86/include/asm/intel_rdt_common.h @@ -0,0 +1,6 @@ +#ifndef _ASM_X86_INTEL_RDT_COMMON_H +#define _ASM_X86_INTEL_RDT_COMMON_H + +#define MSR_IA32_PQR_ASSOC 0x0c8f + +#endif /* _ASM_X86_INTEL_RDT_COMMON_H */ |