linux-kernel - Re: [PATCH AUTOSEL 5.18 15/49] arm64: Expand ESR_ELx_WFx_ISS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <Ypyx7Flp1BhA8plw@sashalap>
Date:   Sun, 5 Jun 2022 09:38:52 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Joey Gouly <joey.gouly@....com>,
        Catalin Marinas <catalin.marinas@....com>, will@...nel.org,
        broonie@...nel.org, alexandru.elisei@....com, mark.rutland@....com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH AUTOSEL 5.18 15/49] arm64: Expand ESR_ELx_WFx_ISS_TI to
 match its ARMv8.7 definition

On Wed, Jun 01, 2022 at 04:26:27PM +0100, Marc Zyngier wrote:
>On Wed, 01 Jun 2022 14:51:39 +0100,
>Sasha Levin <sashal@...nel.org> wrote:
>>
>> From: Marc Zyngier <maz@...nel.org>
>>
>> [ Upstream commit 6a437208cb942a2dd98f7e1c3fd347ed3d425ffc ]
>>
>> Starting with FEAT_WFXT in ARMv8.7, the TI field in the ISS
>> that is reported on a WFx trap is expanded by one bit to
>> allow the description of WFET and WFIT.
>>
>> Special care is taken to exclude the WFxT bit from the mask
>> used to match WFI so that it also matches WFIT when trapped from
>> EL0.
>>
>> Reviewed-by: Joey Gouly <joey.gouly@....com>
>> Signed-off-by: Marc Zyngier <maz@...nel.org>
>> Acked-by: Catalin Marinas <catalin.marinas@....com>
>> Link: https://lore.kernel.org/r/20220419182755.601427-2-maz@kernel.org
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>Please do not backport this patch. It achieves nothing on its own, and
>the kernel isn't broken without it.

I'll drop this and the other ones you've pointed out.

>Also, please do not AUTOSEL KVM/arm64 patches that are not tagged with
>a Cc stable.

Happily!

-- 
Thanks,
Sasha