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Mon, 16 Mar 2026 19:08:18 -0400 (EDT) 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: A2G_ZUb3Hlmw Date: Tue, 17 Mar 2026 00:07:57 +0100 From: "Arnd Bergmann" To: "Matt Roper" , "Arnd Bergmann" Cc: "Matthew Brost" , =?UTF-8?Q?Thomas_Hellstr=C3=B6m?= , "Rodrigo Vivi" , "Dave Airlie" , "Simona Vetter" , "Dnyaneshwar Bhadane" , "Lucas De Marchi" , "Tvrtko Ursulin" , "Umesh Nerlige Ramappa" , "Raag Jadav" , "Niranjana Vishwanathapura" , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Message-Id: In-Reply-To: <20260316225118.GD2729713@mdroper-desk1.amr.corp.intel.com> References: <20260316224357.658520-1-arnd@kernel.org> <20260316225118.GD2729713@mdroper-desk1.amr.corp.intel.com> Subject: Re: [PATCH] drm/xe: use %z format string for ptrdiff_t Content-Type: text/plain Content-Transfer-Encoding: 7bit On Mon, Mar 16, 2026, at 23:51, Matt Roper wrote: > On Mon, Mar 16, 2026 at 11:43:46PM +0100, Arnd Bergmann wrote: >> From: Arnd Bergmann >> >> ptrdiff_t, size_t and long are the same size on all supported architectures, >> but gcc requires the use of the %zx modifier instead of %lx. On 32-bit > > Nathan Chancellor just sent a fix here: > > https://lore.kernel.org/all/20260316-drm-xe-fix-32-bit-wformat-ptrdiff-v1-1-0108b10b2b6b@kernel.org/ > > His solution uses %tx rather than %zx, which according to > Documentation/core-api/printk-formats.rst sounds like it's probably the > most accurate format string for this case? > Right, Nathan's version is correct. I wasn't aware that size_t and ptrdiff_t have different modifiers. Arnd