linux-kernel - Re: [PATCH v2 0/2] cfi: free old cfi shadow asynchronously

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Date:   Mon, 11 Jul 2022 12:20:22 -0700
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Haibo Li <haibo.li@...iatek.com>
Cc:     xiaoming.yu@...iatek.com, Kees Cook <keescook@...omium.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        André Almeida <andrealmeid@...lia.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Juergen Gross <jgross@...e.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Aaron Tomlin <atomlin@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 0/2] cfi: free old cfi shadow asynchronously

On Mon, Jul 04, 2022 at 09:40:44AM +0800, Haibo Li wrote:
> This patchset changes synchronize_rcu to call_rcu in update_shadow.
> 
> Patch 1 enables the CFI sanitization for cfi.c and 
> bypass __cfi_slowpath_diag.
> It is the prerequisite for using call_rcu in cfi.c.
> 
> Patch 2 changes synchronize_rcu to call_rcu and
> free old cfi shadow in rcu cb
> 
> Changes in v2:
>  - Remove _run_cfi_check,add __nocfi to __cfi_slowpath_diag directly
>  - Rename _cfi_shadow_free_rcu to free_shadow
> 
> Haibo Li (2):
>   cfi: enable sanitize for cfi.c
>   cfi: free old cfi shadow asynchronously
> 
>  kernel/Makefile |  3 ---
>  kernel/cfi.c    | 14 +++++++++++---
>  2 files changed, 11 insertions(+), 6 deletions(-)

Thanks for sending v2! For the series:

Reviewed-by: Sami Tolvanen <samitolvanen@...gle.com>

Sami