linux-kernel - Re: [PATCH] riscv/futex: sign extend compare value in atomic cmpxchg

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Message-Id: 
 <173947144178.1330575.8179936961826705707.git-patchwork-notify@kernel.org>
Date: Thu, 13 Feb 2025 18:30:41 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Andreas Schwab <schwab@...e.de>
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] riscv/futex: sign extend compare value in atomic cmpxchg

Hello:

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

On Mon, 03 Feb 2025 11:06:00 +0100 you wrote:
> Make sure the compare value in the lr/sc loop is sign extended to match
> what lr.w does.  Fortunately, due to the compiler keeping the register
> contents sign extended anyway the lack of the explicit extension didn't
> result in wrong code so far, but this cannot be relied upon.
> 
> Fixes: b90edb33010b ("RISC-V: Add futex support.")
> Signed-off-by: Andreas Schwab <schwab@...e.de>
> 
> [...]

Here is the summary with links:
  - riscv/futex: sign extend compare value in atomic cmpxchg
    https://git.kernel.org/riscv/c/5c238584bce5

You are awesome, thank you!
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