linux-kernel - Re: [PATCH 1/4] x86/kvm/cpuid: Fix CPUID function for word 6 (80000001

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Date:   Fri, 3 Nov 2017 17:56:57 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Janakarajan Natarajan <Janakarajan.Natarajan@....com>
Cc:     kvm@...r.kernel.org, x86@...nel.org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krcmar <rkrcmar@...hat.com>,
        Len Brown <len.brown@...el.com>, Kyle Huey <me@...ehuey.com>,
        Kan Liang <Kan.liang@...el.com>,
        Grzegorz Andrejczuk <grzegorz.andrejczuk@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH 1/4] x86/kvm/cpuid: Fix CPUID function for word 6
 (80000001_ECX)

On Wed, Nov 01, 2017 at 11:19:27AM -0500, Janakarajan Natarajan wrote:
> The function for CPUID 80000001 ECX is set to 0xc0000001. Set it to
> 0x80000001.
> 
> Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@....com>
> ---
>  arch/x86/kvm/cpuid.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
> index 0bc5c13..b21b1d2 100644
> --- a/arch/x86/kvm/cpuid.h
> +++ b/arch/x86/kvm/cpuid.h
> @@ -43,7 +43,7 @@ static const struct cpuid_reg reverse_cpuid[] = {
>  	[CPUID_8086_0001_EDX] = {0x80860001, 0, CPUID_EDX},
>  	[CPUID_1_ECX]         = {         1, 0, CPUID_ECX},
>  	[CPUID_C000_0001_EDX] = {0xc0000001, 0, CPUID_EDX},
> -	[CPUID_8000_0001_ECX] = {0xc0000001, 0, CPUID_ECX},
> +	[CPUID_8000_0001_ECX] = {0x80000001, 0, CPUID_ECX},
>  	[CPUID_7_0_EBX]       = {         7, 0, CPUID_EBX},
>  	[CPUID_D_1_EAX]       = {       0xd, 1, CPUID_EAX},
>  	[CPUID_F_0_EDX]       = {       0xf, 0, CPUID_EDX},
> -- 

Reviewed-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--