In particular if we're running virtualized, the underlying hypervisor
(which may be another Xen) may not surface MTRRs, and offer PAT only.
Fixes: 5a281883cdc3 ("Hardcode many cpu features for x86/64 -- we know 64-bit")
Signed-off-by: Jan Beulich <[email protected]>
--- a/xen/arch/x86/include/asm/cpufeature.h
+++ b/xen/arch/x86/include/asm/cpufeature.h
@@ -70,7 +70,7 @@ static inline bool boot_cpu_has(unsigned
#define cpu_has_pse 1
#define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
#define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP)
-#define cpu_has_mtrr 1
+#define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR)
#define cpu_has_pge 1
#define cpu_has_pse36 boot_cpu_has(X86_FEATURE_PSE36)
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLUSH)
