From: Greg KH <gregkh@linuxfoundation.org>
To: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org,
catalin.marinas@arm.com, will@kernel.org, maz@kernel.org,
dbrazdil@google.com
Subject: Re: [PATCH][for-stable-v5.11]] arm64: Unconditionally set virtual cpu id registers
Date: Tue, 16 Mar 2021 12:31:21 +0100 [thread overview]
Message-ID: <YFCXCbKefWH8smpB@kroah.com> (raw)
In-Reply-To: <20210316112500.85268-1-vladimir.murzin@arm.com>
On Tue, Mar 16, 2021 at 11:25:00AM +0000, Vladimir Murzin wrote:
> Commit 78869f0f0552 ("arm64: Extract parts of el2_setup into a macro")
> reorganized el2 setup in such way that virtual cpu id registers set
> only in nVHE, yet they used (and need) to be set irrespective VHE
> support. Lack of setup causes 32-bit guest stop booting due to MIDR
> stay undefined.
>
> Fixes: 78869f0f0552 ("arm64: Extract parts of el2_setup into a macro")
> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
> ---
>
> There is no upstream fix since issue went away due to code there has
> been reworked in 5.12: nVHE comes first, so virtual cpu id register
> are always set.
>
> Maintainers, please, Ack.
Why not just use the "rework" patch instead that fixes this issue?
that's always preferred instead of one-off patches.
thanks,
greg k-h
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next prev parent reply other threads:[~2021-03-16 11:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 11:25 [PATCH][for-stable-v5.11]] arm64: Unconditionally set virtual cpu id registers Vladimir Murzin
2021-03-16 11:31 ` Greg KH [this message]
2021-03-16 11:41 ` Vladimir Murzin
2021-03-16 11:41 ` Marc Zyngier
2021-03-16 13:22 ` Marc Zyngier
2021-03-16 13:37 ` Vladimir Murzin
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