linux-kernel - Re: [PATCH v5] riscv: Optimize crc32 with Zbc extension

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Message-Id: 
 <172077963248.4770.592373890802161820.git-patchwork-notify@kernel.org>
Date: Fri, 12 Jul 2024 10:20:32 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Wang@...eaurora.org, Xiao W <xiao.w.wang@...el.com>
Cc: linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com,
 palmer@...belt.com, aou@...s.berkeley.edu, charlie@...osinc.com,
 andy.chiu@...ive.com, conor.dooley@...rochip.com, greentime.hu@...ive.com,
 ajones@...tanamicro.com, heiko@...ech.de, david.laight@...lab.com,
 haicheng.li@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] riscv: Optimize crc32 with Zbc extension

Hello:

This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@...osinc.com>:

On Fri, 21 Jun 2024 13:47:07 +0800 you wrote:
> As suggested by the B-ext spec, the Zbc (carry-less multiplication)
> instructions can be used to accelerate CRC calculations. Currently, the
> crc32 is the most widely used crc function inside kernel, so this patch
> focuses on the optimization of just the crc32 APIs.
> 
> Compared with the current table-lookup based optimization, Zbc based
> optimization can also achieve large stride during CRC calculation loop,
> meantime, it avoids the memory access latency of the table-lookup based
> implementation and it reduces memory footprint.
> 
> [...]

Here is the summary with links:
  - [v5] riscv: Optimize crc32 with Zbc extension
    https://git.kernel.org/riscv/c/a43fe27d6503

You are awesome, thank you!
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