linux-kernel - Re: [PATCH v3 09/11] kvm: arm64: Mark hyp stack pages reserved

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Message-ID: <20200918120044.GC31096@willie-the-truck>
Date:   Fri, 18 Sep 2020 13:00:44 +0100
From:   Will Deacon <will@...nel.org>
To:     David Brazdil <dbrazdil@...gle.com>
Cc:     kvmarm@...ts.cs.columbia.edu,
        Catalin Marinas <catalin.marinas@....com>,
        Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com
Subject: Re: [PATCH v3 09/11] kvm: arm64: Mark hyp stack pages reserved

On Wed, Sep 16, 2020 at 06:34:37PM +0100, David Brazdil wrote:
> In preparation for unmapping hyp pages from host stage-2, allocate/free hyp
> stack using new helpers which automatically mark the pages reserved.

Given that this series doesn't get us that the point of having a stage-2 for
the host, I don't see why we need this part yet.

Will