linux-kernel - Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor

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Message-ID: <20201126155746.GU4327@casper.infradead.org>
Date:   Thu, 26 Nov 2020 15:57:46 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     David Brazdil <dbrazdil@...gle.com>
Cc:     kvmarm@...ts.cs.columbia.edu, Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, 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>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel-team@...roid.com
Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor

On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote:
> The hypervisor starts trapping host SMCs and intercepting host's PSCI
> CPU_ON/SUSPEND calls. It replaces the host's entry point with its own,
> initializes the EL2 state of the new CPU and installs the nVHE hyp vector
> before ERETing to the host's entry point.

I hate CPU people.  This is complete gibberish to anyone who doesn't
already have their head deep in ... whatever you're talking about.