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From: Jim Mattson <jmattson@google.com>
Date: Mon, 25 Mar 2024 20:15:06 -0700
Message-ID: <CALMp9eSSCUSOpP64Ho16sU6iV1urbjfTafJ0nThAWGHE6oOkLw@mail.gmail.com>
Subject: Re: [PATCH 0/5] AVIC bugfixes and workarounds
To: Maxim Levitsky <mlevitsk@redhat.com>
Cc: kvm@vger.kernel.org, Will Deacon <will@kernel.org>, Borislav Petkov <bp@alien8.de>, 
	Dave Hansen <dave.hansen@linux.intel.com>, 
	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>, Thomas Gleixner <tglx@linutronix.de>, 
	Paolo Bonzini <pbonzini@redhat.com>, x86@kernel.org, Robin Murphy <robin.murphy@arm.com>, 
	iommu@lists.linux.dev, Ingo Molnar <mingo@redhat.com>, Joerg Roedel <joro@8bytes.org>, 
	Sean Christopherson <seanjc@google.com>, "H. Peter Anvin" <hpa@zytor.com>, linux-kernel@vger.kernel.org, 
	David Rientjes <rientjes@google.com>
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On Thu, Sep 28, 2023 at 8:05=E2=80=AFAM Maxim Levitsky <mlevitsk@redhat.com=
> wrote:
>
> Hi!
>
> This patch series includes several fixes to AVIC I found while working
> on a new version of nested AVIC code.
>
> Also while developing it I realized that a very simple workaround for
> AVIC's errata #1235 exists and included it in this patch series as well.
>
> Best regards,
>         Maxim Levitsky

Can someone explain why we're still unwilling to enable AVIC by
default? Have the performance issues that plagued the Rome
implementation been fixed? What is AMD's guidance?