linux-kernel - Re: [PATCH 0/2] KVM: arm64: Control visibility of S1PIE related sysregs to userspace

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Message-ID: <e123ee24-2a0c-4ab3-8dc3-2906bf96f38d@sirena.org.uk>
Date: Wed, 21 Aug 2024 15:01:54 +0100
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>
Cc: Oliver Upton <oliver.upton@...ux.dev>,
	James Morse <james.morse@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Joey Gouly <joey.gouly@....com>,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] KVM: arm64: Control visibility of S1PIE related
 sysregs to userspace

On Wed, Aug 21, 2024 at 02:46:25PM +0100, Marc Zyngier wrote:
> Mark Brown <broonie@...nel.org> wrote:

> > Mark Brown (2):
> >       KVM: arm64: Hide TCR2_EL1 from userspace when disabled for guests
> >       KVM: arm64: Hide S1PIE registers from userspace when disabled for guests

> If you are going to do this, please add it on top of [1], and handle
> the corresponding EL2 registers.

OK.  To confirm, this is a desirable change?

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