Commit 3f2adf00 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Borislav Petkov
Browse files

x86/cpu: Use MSR_IA32_MISC_ENABLE constants 



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: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220719174714.2410374-1-pbonzini@redhat.com
parent 6f33a9da

arch/x86/kernel/cpu/intel.c

+2 −2
Original line number Diff line number Diff line
@@ -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);

	}