linux-kernel - Re: [PATCH v3 0/4] Allow AVIC's IPI virtualization to be optional

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Message-ID: <ZRsYNnYEEaY1gMo5@google.com>
Date:   Mon, 2 Oct 2023 12:21:26 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>
Cc:     kvm@...r.kernel.org, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Joerg Roedel <joro@...tes.org>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        Robin Murphy <robin.murphy@....com>, iommu@...ts.linux.dev,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH v3 0/4] Allow AVIC's IPI virtualization to be optional

On Mon, Oct 02, 2023, Maxim Levitsky wrote:
> Hi!
> 
> This patch allows AVIC's ICR emulation to be optional and thus allows
> to workaround AVIC's errata #1235 by disabling this portion of the feature.
> 
> This is v3 of my patch series 'AVIC bugfixes and workarounds' including
> review feedback.

Please respond to my idea[*] instead of sending more patches.  I'm not opposed to
a different approach, but we need to have an actual discussion around the pros and
cons, and hopefully come to an agreement.  This cover letter doesn't even acknowledge
that there is an alternative proposal, let alone justify why the vcpu->loaded
approach was taken.

[*] https://lore.kernel.org/all/ZRYxPNeq1rnp-M0f@google.com