X86: Introduce HW-Pstate scattered cpuid feature

It is rather similar to CPB (boot capability) feature
and exists since fam10h (can be looked up in AMD's BKDG).

The feature is needed for powernow-k8 to cleanup init functions and to
provide proper autoloading matching with the new x86cpu modalias
feature.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
index c7f64e6f537a..addf9e82a7f2 100644
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
@@ -40,6 +40,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
                 { X86_FEATURE_EPB,              CR_ECX, 3, 0x00000006, 0 },
                 { X86_FEATURE_XSAVEOPT,         CR_EAX, 0, 0x0000000d, 1 },
                 { X86_FEATURE_CPB,              CR_EDX, 9, 0x80000007, 0 },
+                { X86_FEATURE_HW_PSTATE,        CR_EDX, 7, 0x80000007, 0 },
                 { X86_FEATURE_NPT,              CR_EDX, 0, 0x8000000a, 0 },
                 { X86_FEATURE_LBRV,             CR_EDX, 1, 0x8000000a, 0 },
                 { X86_FEATURE_SVML,             CR_EDX, 2, 0x8000000a, 0 },