linux-kernel - Re: [PATCH] arm64: signal: nofpsimd: Do not allocate fp/simd context when not available

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Message-Id: <164668908127.3275060.4752923202018767533.b4-ty@kernel.org>
Date:   Mon,  7 Mar 2022 22:03:29 +0000
From:   Will Deacon <will@...nel.org>
To:     ebiederm@...ssion.com, suzuki.poulose@....com,
        mark.rutland@....com, elver@...gle.com, seanjc@...gle.com,
        broonie@...nel.org, David Engraf <david.engraf@...go.com>,
        catalin.marinas@....com
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: signal: nofpsimd: Do not allocate fp/simd context when not available

On Fri, 25 Feb 2022 11:40:08 +0100, David Engraf wrote:
> Commit 6d502b6ba1b2 ("arm64: signal: nofpsimd: Handle fp/simd context for
> signal frames") introduced saving the fp/simd context for signal handling
> only when support is available. But setup_sigframe_layout() always
> reserves memory for fp/simd context. The additional memory is not touched
> because preserve_fpsimd_context() is not called and thus the magic is
> invalid.
> 
> [...]

Applied to arm64 (for-next/fpsimd), thanks!

[1/1] arm64: signal: nofpsimd: Do not allocate fp/simd context when not available
      https://git.kernel.org/arm64/c/0a32c88ddb9a

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev