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

From: Sami Tolvanen <samitolvanen@google.com>
To: Haibo Li <haibo.li@mediatek.com>
Cc: xiaoming.yu@mediatek.com, "Kees Cook" <keescook@chromium.org>,
	"Nathan Chancellor" <nathan@kernel.org>,
	"Nick Desaulniers" <ndesaulniers@google.com>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Masami Hiramatsu" <mhiramat@kernel.org>,
	"Christophe Leroy" <christophe.leroy@csgroup.eu>,
	"André Almeida" <andrealmeid@igalia.com>,
	"Luis Chamberlain" <mcgrof@kernel.org>,
	"Juergen Gross" <jgross@suse.com>,
	"Tiezhu Yang" <yangtiezhu@loongson.cn>,
	"Aaron Tomlin" <atomlin@redhat.com>,
	"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
	linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v2 0/2] cfi: free old cfi shadow asynchronously
Date: Mon, 11 Jul 2022 12:20:22 -0700	[thread overview]
Message-ID: <Ysx39t+I56lDGe4i@google.com> (raw)
In-Reply-To: <20220704014046.34596-1-haibo.li@mediatek.com>

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@google.com>

Sami