From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, Will Deacon <will@kernel.org>
Cc: kernel-team@android.com, linux-arm-kernel@lists.infradead.org,
stable@vger.kernel.org
Subject: Re: [PATCH] KVM: arm64: Avoid corrupting vCPU context register in guest exit
Date: Tue, 2 Mar 2021 18:57:12 +0000 [thread overview]
Message-ID: <161471117621.3770794.6810105085499786951.b4-ty@kernel.org> (raw)
In-Reply-To: <20210226181211.14542-1-will@kernel.org>
On Fri, 26 Feb 2021 18:12:11 +0000, Will Deacon wrote:
> Commit 7db21530479f ("KVM: arm64: Restore hyp when panicking in guest
> context") tracks the currently running vCPU, clearing the pointer to
> NULL on exit from a guest.
>
> Unfortunately, the use of 'set_loaded_vcpu' clobbers x1 to point at the
> kvm_hyp_ctxt instead of the vCPU context, causing the subsequent RAS
> code to go off into the weeds when it saves the DISR assuming that the
> CPU context is embedded in a struct vCPU.
>
> [...]
Applied to kvmarm-master/fixes, thanks!
[1/1] KVM: arm64: Avoid corrupting vCPU context register in guest exit
commit: a8a0f5dbcdf57d89bb8d555c6423763d99a156c1
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2021-03-03 1:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 18:12 [PATCH] KVM: arm64: Avoid corrupting vCPU context register in guest exit Will Deacon
2021-02-26 18:35 ` Marc Zyngier
2021-02-26 19:05 ` Will Deacon
2021-03-02 18:57 ` Marc Zyngier [this message]
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