linux-kernel - Re: [PATCH] arm64/fpsimd: simplify sme

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Message-Id: <175805314947.272606.2121581069783124442.b4-ty@kernel.org>
Date: Tue, 16 Sep 2025 22:13:51 +0100
From: Will Deacon <will@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>,
	Mark Rutland <mark.rutland@....com>,
	Mark Brown <broonie@...nel.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	"Yury Norov (NVIDIA)" <yury.norov@...il.com>
Cc: kernel-team@...roid.com,
	Will Deacon <will@...nel.org>
Subject: Re: [PATCH] arm64/fpsimd: simplify sme_setup()

On Fri, 12 Sep 2025 20:09:05 -0400, Yury Norov (NVIDIA) wrote:
> The function checks info->vq_map for emptiness right before calling
> find_last_bit().
> 
> We can use the find_last_bit() output and save on bitmap_empty() call,
> which is O(N).
> 
> 
> [...]

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

[1/1] arm64/fpsimd: simplify sme_setup()
      https://git.kernel.org/arm64/c/19dd484cd19c

Cheers,
-- 
Will

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