From aa1071562937d1b66b07db48e3dbafe136027f01 Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Wed, 12 Apr 2017 09:24:01 +0200 Subject: [PATCH] x86/xen: use capabilities instead of fake cpuid values for acc When running as pv domain xen_cpuid() is being used instead of native_cpuid(). In xen_cpuid() the acc feature (thermal monitoring) is indicated as not being present by special casing the related cpuid leaf. Instead of delivering fake cpuid values clear the cpu capability bit for acc instead. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross --- arch/x86/xen/enlighten_pv.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 37e174d9009b2..53fe97bd720fc 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -294,9 +294,6 @@ static void __init xen_init_cpuid_mask(void) unsigned int ax, bx, cx, dx; unsigned int xsave_mask; - cpuid_leaf1_edx_mask = - ~(1 << X86_FEATURE_ACC); /* thermal monitoring */ - if (!xen_initial_domain()) cpuid_leaf1_edx_mask &= ~((1 << X86_FEATURE_ACPI)); /* disable ACPI */ @@ -325,6 +322,7 @@ static void __init xen_init_capabilities(void) setup_clear_cpu_cap(X86_FEATURE_DCA); setup_clear_cpu_cap(X86_FEATURE_APERFMPERF); setup_clear_cpu_cap(X86_FEATURE_MTRR); + setup_clear_cpu_cap(X86_FEATURE_ACC); } static void xen_set_debugreg(int reg, unsigned long val) -- 2.39.5