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| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2019-10-23 10:52:35 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-10-28 08:36:58 +0100 |
| commit | 286836a70433fb64131d2590f4bf512097c255e1 (patch) | |
| tree | ebe852b24b62aeaa315695707b1832ad2e53244e /arch/x86/kernel/cpu/cpu.h | |
| parent | c2955f270a84762343000f103e0640d29c7a96f3 (diff) | |
| download | linux-286836a70433fb64131d2590f4bf512097c255e1.tar.gz linux-286836a70433fb64131d2590f4bf512097c255e1.tar.bz2 linux-286836a70433fb64131d2590f4bf512097c255e1.zip | |
x86/cpu: Add a helper function x86_read_arch_cap_msr()
Add a helper function to read the IA32_ARCH_CAPABILITIES MSR.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Neelima Krishnan <neelima.krishnan@intel.com>
Reviewed-by: Mark Gross <mgross@linux.intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Diffstat (limited to 'arch/x86/kernel/cpu/cpu.h')
| -rw-r--r-- | arch/x86/kernel/cpu/cpu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h index c0e2407abdd6..a5cd0eba2746 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -62,4 +62,6 @@ unsigned int aperfmperf_get_khz(int cpu); extern void x86_spec_ctrl_setup_ap(void); +extern u64 x86_read_arch_cap_msr(void); + #endif /* ARCH_X86_CPU_H */ |