linux-kernel - Re: [PATCH v5 33/36] KVM: arm64: Wrap the host with a stage 2

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Message-ID: <YFDAyhjPEsnZ4N3P@google.com>
Date:   Tue, 16 Mar 2021 14:29:30 +0000
From:   Quentin Perret <qperret@...gle.com>
To:     Mate Toth-Pal <mate.toth-pal@....com>
Cc:     catalin.marinas@....com, will@...nel.org, maz@...nel.org,
        james.morse@....com, julien.thierry.kdev@...il.com,
        suzuki.poulose@....com, android-kvm@...gle.com, seanjc@...gle.com,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org, kernel-team@...roid.com,
        kvmarm@...ts.cs.columbia.edu, tabba@...gle.com, ardb@...nel.org,
        mark.rutland@....com, dbrazdil@...gle.com
Subject: Re: [PATCH v5 33/36] KVM: arm64: Wrap the host with a stage 2

On Tuesday 16 Mar 2021 at 12:53:53 (+0000), Quentin Perret wrote:
> On Tuesday 16 Mar 2021 at 13:28:42 (+0100), Mate Toth-Pal wrote:
> > Changing the value of MT_S2_FWB_NORMAL to 7 would change this behavior, and
> > the resulting memory type would be device.
> 
> Sounds like the correct fix here -- see below.

Just to clarify this, I meant this should be the configuration for the
host stage-2. We'll want to keep the existing behaviour for guests I
believe.

Thanks,
Quentin