From: Will Deacon <will.deacon@arm.com>
To: gregkh@linuxfoundation.org
Cc: catalin.marinas@arm.com, marc.zyngier@arm.com, stable@vger.kernel.org
Subject: Re: FAILED: patch "[PATCH] arm64: errata: Add workaround for Cortex-A76 erratum #1463225" failed to apply to 4.14-stable tree
Date: Tue, 28 May 2019 12:44:09 +0100 [thread overview]
Message-ID: <20190528114409.GF20809@fuggles.cambridge.arm.com> (raw)
In-Reply-To: <1558965280196247@kroah.com>
On Mon, May 27, 2019 at 03:54:40PM +0200, gregkh@linuxfoundation.org wrote:
> The patch below does not apply to the 4.14-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>.
Urgh. I'm going to punt on this unless somebody requests a backport to
a kernel prior to 4.19 explicitly. The issue is that our syscall entry
code was moved to C after 4.14 and this workaround relies heavily on that
work. A backport would therefore necessitate a rewrite of the workaround
that hooks the assembly directly. Whilst do-able, I'd rather know that
(a) somebody wants this (b) they plan to deploy it on real devices and
(c) they can help to test.
Sound reasonable?
Will
next prev parent reply other threads:[~2019-05-28 11:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 13:54 FAILED: patch "[PATCH] arm64: errata: Add workaround for Cortex-A76 erratum #1463225" failed to apply to 4.14-stable tree gregkh
2019-05-28 11:44 ` Will Deacon [this message]
2019-05-28 13:00 ` Greg KH
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