Re: [PATCH] KVM: arm64: Ensure I-cache isolation between vcpus of a same VM

From: Marc Zyngier <maz@kernel.org>
To: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, Marc Zyngier <maz@kernel.org>
Cc: kernel-team@android.com,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Will Deacon <will@kernel.org>,
	Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: Re: [PATCH] KVM: arm64: Ensure I-cache isolation between vcpus of a same VM
Date: Tue,  9 Mar 2021 18:01:05 +0000	[thread overview]
Message-ID: <161531284779.3772144.1323992258111335863.b4-ty@kernel.org> (raw)
In-Reply-To: <20210303164505.68492-1-maz@kernel.org>

On Wed, 3 Mar 2021 16:45:05 +0000, Marc Zyngier wrote:
> It recently became apparent that the ARMv8 architecture has interesting
> rules regarding attributes being used when fetching instructions
> if the MMU is off at Stage-1.
> 
> In this situation, the CPU is allowed to fetch from the PoC and
> allocate into the I-cache (unless the memory is mapped with
> the XN attribute at Stage-2).
> 
> [...]

Applied to fixes, thanks!

[1/1] KVM: arm64: Ensure I-cache isolation between vcpus of a same VM
      commit: 01dc9262ff5797b675c32c0c6bc682777d23de05

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.