From be1a130a99285a5ae6937f890ba31be1f7a5a9dc Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Thu, 15 Dec 2011 14:28:45 +0100 Subject: [PATCH] x86/AMD: use correct shift count when merging model and stepping ... for legacy errata matching. Signed-off-by: Jan Beulich Acked-by: Keir Fraser --- xen/arch/x86/cpu/amd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/x86/cpu/amd.c b/xen/arch/x86/cpu/amd.c index 3750c7a9de..33b8912297 100644 --- a/xen/arch/x86/cpu/amd.c +++ b/xen/arch/x86/cpu/amd.c @@ -216,7 +216,7 @@ int cpu_has_amd_erratum(const struct cpuinfo_x86 *cpu, int osvw, ...) } /* OSVW unavailable or ID unknown, match family-model-stepping range */ - ms = (cpu->x86_model << 8) | cpu->x86_mask; + ms = (cpu->x86_model << 4) | cpu->x86_mask; while ((range = va_arg(ap, int))) { if ((cpu->x86 == AMD_MODEL_RANGE_FAMILY(range)) && (ms >= AMD_MODEL_RANGE_START(range)) && -- 2.30.2