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Thu, 5 Mar 2026 12:10:27 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AlPWkszDc-o7 Date: Thu, 05 Mar 2026 18:10:06 +0100 From: "Arnd Bergmann" To: "Nicolas Dufresne" , "Arnd Bergmann" , "Detlev Casanova" , "Ezequiel Garcia" , "Mauro Carvalho Chehab" , =?UTF-8?Q?Heiko_St=C3=BCbner?= , "Nathan Chancellor" , "Hans Verkuil" Cc: "Nick Desaulniers" , "Bill Wendling" , "Justin Stitt" , "Kees Cook" , linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Message-Id: In-Reply-To: <1621b56864cb186f1e5433b73b56afc00aa83452.camel@collabora.com> References: <20260305152644.791897-1-arnd@kernel.org> <1621b56864cb186f1e5433b73b56afc00aa83452.camel@collabora.com> Subject: Re: [PATCH 1/2] [RESEND] media: rkvdec: reduce excessive stack usage in assemble_hw_pps() Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Thu, Mar 5, 2026, at 17:37, Nicolas Dufresne wrote: > > Le jeudi 05 mars 2026 =C3=A0 16:26 +0100, Arnd Bergmann a =C3=A9crit=C2= =A0: >> From: Arnd Bergmann >>=20 >> The rkvdec_pps had a large set of bitfields, all of which >> as misaligned. This causes clang-21 and likely other versions to >> produce absolutely awful object code and a warning about very >> large stack usage, on targets without unaligned access: > > I'm a bit surprised you felt the need for resend. Perhaps you can help= us > understand what made you think your patch wasn't being processed ? I updated the second patch today after I found a corner case that wasn't addressed by the first version. As I had sent both as a series a month ago, and neither was in linux-next yet, it seemed more helpful to send an updated series rather than replace only one of the two. > My PR: > https://patchwork.linuxtv.org/project/linux-media/patch/2074ba5a5d05e2= 39f432d176eb051105f7e692f9.camel@collabora.com/ > > And Hans/Mauro did logistic on the #linux-maint IRC channel this morni= ng. I > believe I've marked all the relevant patches on patchwork our of "New"= state and > you have my Rb. What else would help you ? That's fine then, I did not mean to seem impatient. I assume the original patches will be in linux-next then, and [v2 2/2] will conflict. I'll let you review that one first, but can send a rebased version if you think we should merge it on top. Arnd