linux-kernel - Re: [PATCH V2] riscv: Fixup race condition on PG_dcache_clean in flush_icache

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Date:   Thu, 09 Feb 2023 23:40:17 +0000
From:   patchwork-bot+linux-riscv@...nel.org
To:     Guo Ren <guoren@...nel.org>
Cc:     linux-riscv@...ts.infradead.org, arnd@...db.de,
        palmer@...osinc.com, conor.dooley@...rochip.com,
        apatel@...tanamicro.com, atishp@...shpatra.org,
        mark.rutland@....com, bjorn@...nel.org, tongtiangen@...wei.com,
        ajones@...tanamicro.com, andrew@...ive.com,
        linux-kernel@...r.kernel.org, guoren@...ux.alibaba.com
Subject: Re: [PATCH V2] riscv: Fixup race condition on PG_dcache_clean in
 flush_icache_pte

Hello:

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

On Thu, 26 Jan 2023 22:53:06 -0500 you wrote:
> From: Guo Ren <guoren@...ux.alibaba.com>
> 
> In commit 588a513d3425 ("arm64: Fix race condition on PG_dcache_clean
> in __sync_icache_dcache()"), we found RISC-V has the same issue as the
> previous arm64. The previous implementation didn't guarantee the correct
> sequence of operations, which means flush_icache_all() hasn't been
> called when the PG_dcache_clean was set. That would cause a risk of page
> synchronization.
> 
> [...]

Here is the summary with links:
  - [V2] riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte
    https://git.kernel.org/riscv/c/950b879b7f02

You are awesome, thank you!
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