linux-kernel - Re: [PATCH 1/3] KVM: x86: fix reporting of AMD speculation bug CPUID leaf

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Message-ID: <20190822184656.GC9964@char.us.oracle.com>
Date:   Thu, 22 Aug 2019 14:46:56 -0400
From:   Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        jmattson@...hat.com, ehabkost@...hat.com
Subject: Re: [PATCH 1/3] KVM: x86: fix reporting of AMD speculation bug CPUID
 leaf

On Wed, Aug 21, 2019 at 10:26:40AM +0200, Paolo Bonzini wrote:
> The AMD_* bits have to be set from the vendor-independent
> feature and bug flags, because KVM_GET_SUPPORTED_CPUID does not care
> about the vendor and they should be set on Intel processors as well.
> On top of this, SSBD, STIBP and AMD_SSB_NO bit were not set, and
> VIRT_SSBD does not have to be added manually because it is a
> cpufeature that comes directly from the host's CPUID bit.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>

Thank you!