From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8E5C642B33D; Thu, 16 Jul 2026 14:26:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784211972; cv=none; b=H+1NQ/ZQ8es24gmvy818kuQ08logC9SWwTj1rLpjFldieAKBMXfxt2VnU98kHLSR22ywtCaap7PJDMUjH7l4TOniEl58linLdAugmLjMB9FO1iEOPvx2efxxd62C3v7xVlvT8Z0vdpsY1sjH7uyusgBVRr0EfMDe9iWUmjSoIEw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784211972; c=relaxed/simple; bh=ulMVGsovmVAPFN91/GyZSCGLGQkRJjtYHQ1bNxtS51g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Kbmv5ZhXIqjfsRCpT5CDkgNhP4rLbK29JBKfGOt7ky5b/fmeJY6SC2/j7gJYigFHl0d200gVdOs/16FxXK/scL11nWxpFQXe/j2LwG1+bJGuoDNnKv7r0lrWzX0Fl5Q6z+I6Zr9HCQsADT3YHeMewcVU8C1ji9xN+PR6P2Mk7e0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PCJhQFE/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PCJhQFE/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1BE3A1F00A3D; Thu, 16 Jul 2026 14:26:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784211971; bh=dmMpkIr0sbIJVy9wvQ7Wf9oRTb2hJTI9MXcBUx5k8Tg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To; b=PCJhQFE/DV7ADE1bcScyLgjJwZxfJG3ka0INRryAWNnkVsuTxNuAqvNB+AUxUUKJv S05XNoZuc0j6suam3Jb/vU6WKPIZMXZNbYdDXpSe/ZDezpsep6QU5WFyMDc5YMdU9+ UpJA8+JxSXjt7tJ9lyq5Lq+4Vi3CqvB64fXXyj/p0cKcQFAuBqRibIOKOEi9hDk9zY VZTKCZChX7Ntu+KyPdrXeLrYBolKQQ16iHKLeINr9cwa7C6ZS6tzM6J3/HHSl/Vy6L zefNWDxZ3M6o38J3NYqqfU2Bt7ZXlogNvdW+ujb4Xu2Ay5CmXZTJOhNs2VgbIzKQKe kUdwkLv1PZ2kg== From: Gary Guo To: Danilo Krummrich , Alice Ryhl , Daniel Almeida , Miguel Ojeda , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Trevor Gross , Tamir Duberstein , Alexandre Courbot , =?UTF-8?q?Onur=20=C3=96zkan?= , David Airlie , Simona Vetter Cc: driver-core@lists.linux.dev, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] rust: drm: fix non-const `read8` in unit test Date: Thu, 16 Jul 2026 15:25:44 +0100 Message-ID: <20260716142545.3622278-2-gary@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260716142545.3622278-1-gary@kernel.org> References: <20260716142545.3622278-1-gary@kernel.org> Reply-To: Gary Guo Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Gary Guo With CONFIG_CC_OPTIMIZE_FOR_SIZE, the address validity check in non-const `read8` invocaction is not optimized away, leading to build failure. Signed-off-by: Gary Guo --- rust/kernel/drm/gem/shmem.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rust/kernel/drm/gem/shmem.rs b/rust/kernel/drm/gem/shmem.rs index 580e0808d6c0..a687d46d170d 100644 --- a/rust/kernel/drm/gem/shmem.rs +++ b/rust/kernel/drm/gem/shmem.rs @@ -688,7 +688,7 @@ fn vmap_io() -> Result { // Ensure the ordering in memory is correct let expected = 0xFEDCBA98_u32.to_ne_bytes().into_iter(); for (offset, expected) in (0x20..=0x23).zip(expected) { - assert_eq!(vmap.read8(offset), expected); + assert_eq!(vmap.try_read8(offset).unwrap(), expected); } Ok(()) -- 2.54.0