linux-kernel - Re: [PART1 RFC 4/9] KVM: x86: Detect and Initialize AVIC support

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Message-ID: <56BDFE47.20700@amd.com>
Date:	Fri, 12 Feb 2016 22:46:15 +0700
From:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
To:	Borislav Petkov <bp@...en8.de>
CC:	<joro@...tes.org>, <alex.williamson@...hat.com>, <gleb@...nel.org>,
	<pbonzini@...hat.com>, <kvm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <wei@...hat.com>,
	<sherry.hurwitz@....com>
Subject: Re: [PART1 RFC 4/9] KVM: x86: Detect and Initialize AVIC support

Hi,

On 02/12/2016 09:13 PM, Borislav Petkov wrote:
>> diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
>> >index 8cb57df..88cfbe7 100644
>> >--- a/arch/x86/kernel/cpu/scattered.c
>> >+++ b/arch/x86/kernel/cpu/scattered.c
>> >@@ -37,6 +37,7 @@ void init_scattered_cpuid_features(struct cpuinfo_x86 *c)
>> >  		{ X86_FEATURE_HW_PSTATE,	CR_EDX, 7, 0x80000007, 0 },
>> >  		{ X86_FEATURE_CPB,		CR_EDX, 9, 0x80000007, 0 },
>> >  		{ X86_FEATURE_PROC_FEEDBACK,	CR_EDX,11, 0x80000007, 0 },
>> >+		{ X86_FEATURE_AVIC,		CR_EDX,13, 0x8000000a, 0 },
>> >  		{ 0, 0, 0, 0, 0 }
>> >  	};
> You need to check tip/master when/before/after touching arch/x86/:
>
> a1ff57260818 ("x86/cpufeature: Add AMD AVIC bit")

Ok, I'll check that in the next patch series.

Thanks,
Suravee