linux-kernel - Re: [PATCH 1/2] KVM: x86: fix reporting of AMD speculation bug CPUID leaf

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Message-ID: <9097ee53-e681-60ef-b389-6603bcb52041@redhat.com>
Date:   Mon, 19 Aug 2019 20:33:21 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Jim Mattson <jmattson@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, kvm list <kvm@...r.kernel.org>
Subject: Re: [PATCH 1/2] KVM: x86: fix reporting of AMD speculation bug CPUID
 leaf

On 19/08/19 20:30, Jim Mattson wrote:
>>> Perhaps there is another patch coming for reporting Intel bits on AMD?
>> I wasn't going to work on it but yes, they should be.  This patch just
>> fixed what was half-implemented.
> I'm not sure that the original intent was to enumerate the AMD
> features on Intel hosts, but it seems reasonable to do so.
> 
> Should we also populate the AMD cache topology leaf (0x8000001d) on
> Intel hosts? And so on? :-)
>
> Reviewed-by: Jim Mattson <jmattson@...gle.com>

Thanks.  Note that I plan to send v2 tomorrow, and I've also done the
part that reports Intel bits unconditionally.

Paolo