From: Sasha Levin <sashal@kernel.org>
To: gregkh@linuxfoundation.org
Cc: steven.price@arm.com, james.morse@arm.com, maz@kernel.org,
stable@vger.kernel.org
Subject: Re: FAILED: patch "[PATCH] KVM: arm64: Fix kvm_reset_vcpu() return code being incorrect" failed to apply to 5.4-stable tree
Date: Mon, 13 Jul 2020 14:59:01 -0400 [thread overview]
Message-ID: <20200713185901.GG2722994@sasha-vm> (raw)
In-Reply-To: <1594656059166107@kroah.com>
On Mon, Jul 13, 2020 at 06:00:59PM +0200, gregkh@linuxfoundation.org wrote:
>
>The patch below does not apply to the 5.4-stable tree.
>If someone wants it applied there, or to any other stable or longterm
>tree, then please email the backport, including the original git commit
>id to <stable@vger.kernel.org>.
>
>thanks,
>
>greg k-h
>
>------------------ original commit in Linus's tree ------------------
>
>From 66b7e05dc0239c5817859f261098ba9cc2efbd2b Mon Sep 17 00:00:00 2001
>From: Steven Price <steven.price@arm.com>
>Date: Wed, 17 Jun 2020 11:54:56 +0100
>Subject: [PATCH] KVM: arm64: Fix kvm_reset_vcpu() return code being incorrect
> with SVE
>
>If SVE is enabled then 'ret' can be assigned the return value of
>kvm_vcpu_enable_sve() which may be 0 causing future "goto out" sites to
>erroneously return 0 on failure rather than -EINVAL as expected.
>
>Remove the initialisation of 'ret' and make setting the return value
>explicit to avoid this situation in the future.
>
>Fixes: 9a3cdf26e336 ("KVM: arm64/sve: Allow userspace to enable SVE for vcpus")
>Cc: stable@vger.kernel.org
>Reported-by: James Morse <james.morse@arm.com>
>Signed-off-by: Steven Price <steven.price@arm.com>
>Signed-off-by: Marc Zyngier <maz@kernel.org>
>Link: https://lore.kernel.org/r/20200617105456.28245-1-steven.price@arm.com
I've worked around not having 540f76d12c66 ("arm64: cpufeature: Add CPU
capability for AArch32 EL1 support") in 5.7 and 5.4 and queued this
patch.
--
Thanks,
Sasha
next prev parent reply other threads:[~2020-07-13 18:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-13 16:00 FAILED: patch "[PATCH] KVM: arm64: Fix kvm_reset_vcpu() return code being incorrect" failed to apply to 5.4-stable tree gregkh
2020-07-13 18:59 ` Sasha Levin [this message]
2020-07-14 6:08 ` Greg KH
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