linux-kernel - Re: [PATCH] KVM: arm64: Fix set_id_regs selftest for ASIDBITS becoming unwritable

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Message-ID: <53b40aa8-f51c-4c4e-a4ad-e6a9512e5197@sirena.org.uk>
Date: Tue, 17 Dec 2024 13:12:12 +0000
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>
Cc: Oliver Upton <oliver.upton@...ux.dev>, Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
	kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: arm64: Fix set_id_regs selftest for ASIDBITS
 becoming unwritable

On Tue, Dec 17, 2024 at 08:30:37AM +0000, Marc Zyngier wrote:
> Mark Brown <broonie@...nel.org> wrote:

> > Fixes: 03c7527e97f7 ("KVM: arm64: Do not allow ID_AA64MMFR0_EL1.ASIDbits to be overridden")

> A patch for a test doesn't fix anything in the kernel.

The selftests are shipped as part of the kernel source and frequently
used for testing the kernel, it's all one source base and we want to
ensure that for example the test fix gets backported if the relevant
kernel patch does.

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