From: Will Deacon <will@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
Vladimir Murzin <vladimir.murzin@arm.com>
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>,
yeoreum.yun@arm.com
Subject: Re: [PATCH] arm64: process: Fix context switching MTE store-only tag check
Date: Mon, 24 Aug 2026 17:01:54 +0100 [thread overview]
Message-ID: <178758068582.178214.11707569585909854031.b4-ty@kernel.org> (raw)
In-Reply-To: <20260819144859.5447-1-vladimir.murzin@arm.com>
On Wed, 19 Aug 2026 15:48:59 +0100, Vladimir Murzin wrote:
> SCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check
> mode. However, it is not part of SCTLR_USER_MASK which imply that on
> context switch we never clear SCTLR_EL1.TCSO0, so we are leaking that
> setting into another task.
>
> Fix that by including SCTLR_EL1_TCSO0_MASK into SCTLR_USER_MASK
>
> [...]
Applied to arm64 (for-next/core), thanks!
[1/1] arm64: process: Fix context switching MTE store-only tag check
https://git.kernel.org/arm64/c/b8f070ac3167
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
prev parent reply other threads:[~2026-08-24 16:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-19 14:48 [PATCH] arm64: process: Fix context switching MTE store-only tag check Vladimir Murzin
2026-08-19 15:24 ` Yeoreum Yun
2026-08-19 15:44 ` Catalin Marinas
2026-08-24 16:01 ` Will Deacon [this message]
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