From: Will Deacon <will@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
Mark Rutland <mark.rutland@arm.com>,
catalin.marinas@arm.com
Cc: kernel-team@android.com, Will Deacon <will@kernel.org>,
Joey Gouly <joey.gouly@arm.com>,
James Morse <james.morse@arm.com>, Marc Zyngier <maz@kernel.org>
Subject: Re: [PATCH] arm64: entry: add missing noinstr
Date: Thu, 15 Jul 2021 18:39:01 +0100 [thread overview]
Message-ID: <162636701210.638087.2984163869752602686.b4-ty@kernel.org> (raw)
In-Reply-To: <20210714172801.16475-1-mark.rutland@arm.com>
On Wed, 14 Jul 2021 18:28:01 +0100, Mark Rutland wrote:
> We intend that all the early exception handling code is marked as
> `noinstr`, but we forgot this for __el0_error_handler_common(), which is
> called before we have completed entry from user mode. If it were
> instrumented, we could run into problems with RCU, lockdep, etc.
>
> Mark it as `noinstr` to prevent this.
>
> [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: entry: add missing noinstr
https://git.kernel.org/arm64/c/31a7f0f6c8f3
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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prev parent reply other threads:[~2021-07-15 17:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 17:28 [PATCH] arm64: entry: add missing noinstr Mark Rutland
2021-07-15 17:39 ` Will Deacon [this message]
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