linux-kernel - Re: [PATCH v6 0/5] riscv: uaccess: optimisations

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Message-Id: 
 <174681183574.3697320.3349869843167722914.git-patchwork-notify@kernel.org>
Date: Fri, 09 May 2025 17:30:35 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Cyril Bur <cyrilbur@...storrent.com>
Cc: linux-riscv@...ts.infradead.org, palmer@...belt.com,
 aou@...s.berkeley.edu, paul.walmsley@...ive.com, charlie@...osinc.com,
 jrtc27@...c27.com, ben.dooks@...ethink.co.uk, alex@...ti.fr,
 linux-kernel@...r.kernel.org, jszhang@...nel.org
Subject: Re: [PATCH v6 0/5] riscv: uaccess: optimisations

Hello:

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

On Thu, 10 Apr 2025 07:05:21 +0000 you wrote:
> This series tries to optimize riscv uaccess by allowing the use of
> user_access_begin() and user_access_end() which permits grouping user accesses
> and avoiding the CSR write penalty for each access.
> 
> The error path can also be optimised using asm goto which patches 3 and 4
> achieve. This will speed up jumping to labels by avoiding the need of an
> intermediary error type variable within the uaccess macros
> 
> [...]

Here is the summary with links:
  - [v6,1/5] riscv: save the SR_SUM status over switches
    https://git.kernel.org/riscv/c/788aa64c01f1
  - [v6,2/5] riscv: implement user_access_begin() and families
    https://git.kernel.org/riscv/c/19500c6dbc5c
  - [v6,3/5] riscv: uaccess: use input constraints for ptr of __put_user()
    https://git.kernel.org/riscv/c/62135bf660b2
  - [v6,4/5] riscv: uaccess: use 'asm goto' for put_user()
    https://git.kernel.org/riscv/c/cdf647e81714
  - [v6,5/5] riscv: uaccess: use 'asm_goto_output' for get_user()
    https://git.kernel.org/riscv/c/f6bff7827a48

You are awesome, thank you!
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