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 <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 37e174d..53fe97b 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -294,9 +294,6 @@
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 @@
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)