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: 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

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 8321c43..a00dd3e 100644 (file)
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -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);
        }