From: Marc Zyngier <maz@kernel•org>
To: Vincent Donnefort <vdonnefort@google•com>
Cc: oliver.upton@linux•dev, joey.gouly@arm•com,
suzuki.poulose@arm•com, yuzenghui@huawei•com,
catalin.marinas@arm•com, will@kernel•org,
linux-arm-kernel@lists•infradead.org, kvmarm@lists•linux.dev,
kernel-team@android•com
Subject: Re: [PATCH] KVM: arm64: Fix nVHE/pKVM hyp tracing error on invalid desc
Date: Fri, 15 May 2026 11:21:15 +0100 [thread overview]
Message-ID: <867bp5x9b8.wl-maz@kernel.org> (raw)
In-Reply-To: <20260514162624.3477857-1-vdonnefort@google.com>
On Thu, 14 May 2026 17:26:24 +0100,
Vincent Donnefort <vdonnefort@google•com> wrote:
>
> pKVM must validate the host-provided tracing buffer descriptor.
> However, if an error is found, the hypervisor would just return 0 to the
> host. Fix the return value on validation failure.
>
> While at it, rename the function to hyp_trace_desc_is_valid() and skip
> validation for the nVHE mode as we trust host-provided data in that
> case.
>
> Signed-off-by: Vincent Donnefort <vdonnefort@google•com>
Fixes: tag? Should it be considered as a Cc: to stable?
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2026-05-15 10:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-14 16:26 [PATCH] KVM: arm64: Fix nVHE/pKVM hyp tracing error on invalid desc Vincent Donnefort
2026-05-15 10:21 ` Marc Zyngier [this message]
2026-05-15 12:58 ` Vincent Donnefort
2026-05-20 7:17 ` Marc Zyngier
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