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x86/cpu: Use MSR_IA32_MISC_ENABLE constants

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Instead of the magic numbers 1<<11 and 1<<12 use the constants
from msr-index.h.  This makes it obvious where those bits
of MSR_IA32_MISC_ENABLE are consumed (and in fact that Linux
consumes them at all) to simple minds that grep for
MSR_IA32_MISC_ENABLE_.*_UNAVAIL.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220719174714.2410374-1-pbonzini@redhat.com
This commit is contained in:
Paolo Bonzini 2022-07-19 13:47:14 -04:00 committed by Borislav Petkov
parent 6f33a9daff
commit 3f2adf00f5
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kernel/cpu/intel.c
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@ -647,9 +647,9 @@ static void init_intel(struct cpuinfo_x86 *c)
unsigned int l1, l2;
rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
if (!(l1 & (1<<11)))
if (!(l1 & MSR_IA32_MISC_ENABLE_BTS_UNAVAIL))
set_cpu_cap(c, X86_FEATURE_BTS);
if (!(l1 & (1<<12)))
if (!(l1 & MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL))
set_cpu_cap(c, X86_FEATURE_PEBS);
}