From: Greg KH <greg@kroah.com>
To: Sasha Levin <sashal@kernel.org>
Cc: Will Deacon <will@kernel.org>,
Vladimir Murzin <vladimir.murzin@arm.com>,
linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org,
catalin.marinas@arm.com, maz@kernel.org, dbrazdil@google.com
Subject: Re: [PATCH v2][for-stable-v5.11] arm64: Unconditionally set virtual cpu id registers
Date: Fri, 19 Mar 2021 10:45:21 +0100 [thread overview]
Message-ID: <YFRysSLvd8Ekdl5f@kroah.com> (raw)
In-Reply-To: <YFNOHKX6V4dkwWIp@sashalap>
On Thu, Mar 18, 2021 at 08:57:00AM -0400, Sasha Levin wrote:
> On Wed, Mar 17, 2021 at 01:26:15PM +0000, Will Deacon wrote:
> > On Tue, Mar 16, 2021 at 01:43:19PM +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.
> > >
> > > Fixes: 78869f0f0552 ("arm64: Extract parts of el2_setup into a macro")
> > > Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
> > > ---
> > > Changelog
> > >
> > > v1 -> v2
> > > - Drop the reference to 32bit guests from commit message (per Marc)
> > >
> > > 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.
> > >
> > > arch/arm64/include/asm/el2_setup.h | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > Acked-by: Will Deacon <will@kernel.org>
> >
> > It's a bit weird to have a patch in stable that isn't upstream, but I don't
> > see a better option here.
>
> Yes, I'd agree here - the commits that would need to be backported look
> way too invasive.
>
> I've queued it up, thanks.
I don't see it, so I've added it as well...
thanks,
greg k-h
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next prev parent reply other threads:[~2021-03-19 9:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 13:43 [PATCH v2][for-stable-v5.11] arm64: Unconditionally set virtual cpu id registers Vladimir Murzin
2021-03-16 13:52 ` Marc Zyngier
2021-03-17 13:26 ` Will Deacon
2021-03-18 12:57 ` Sasha Levin
2021-03-19 9:45 ` Greg KH [this message]
2021-03-19 9:45 ` Patch "arm64: Unconditionally set virtual cpu id registers" has been added to the 5.11-stable tree gregkh
2021-03-19 9:52 ` Patch "arm64: Unconditionally set virtual cpu id registers" has been added to the 4.14-stable tree gregkh
2021-03-19 9:58 ` Greg KH
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