From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 95FEB17A589; Tue, 10 Sep 2024 10:39:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725964774; cv=none; b=KJw5esMiu/iCW1/wPZl9VMdnTbGJnpeE5aiNQG4ufcXOQFL80/brNGmzMV3mj8Lr6qWTt7puiUF0GAjm9AF26nw3KZTyteSIElud5UOko4QKTI/Q6SRM9sX0ZKwUOWr5/8PihcoxuHRh9yoTg4x2g/BtK7QqWpHcK0e05tKz5rs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725964774; c=relaxed/simple; bh=FIyNmzIGhyQDRdfMNiT2J28tflcm5/BoL4ZOxtoUKBY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XrYhsl8YuS1EkepGOrE2HbnNl5BN0zodVuL0lXnePZE79HcZ7J2vYqwvj9SGVoczb2iYoly+fLWX6w+KrcFNc6LEe2Kcxxr8MAyrJGbG+WlKNwulvqj4aeA41HZunz8jvnccP6MuOeodhLXXiyaN+ZHugKZCfrr1Eddh9+JiFX0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=eWRK50Se; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="eWRK50Se" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0830C4CEC3; Tue, 10 Sep 2024 10:39:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1725964774; bh=FIyNmzIGhyQDRdfMNiT2J28tflcm5/BoL4ZOxtoUKBY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eWRK50SeFTd/qnj27tHHGwDlQmcpx6oX1TLAZ6XkGiSx2x4OW8Q/lJFawOLjCk9xQ uKQ88op9XDrtPDlMJ7rICVOeoY+Lvlhd+wkwNMkb+YPPBvFyj3r3KePfuKTZn1kFYc FG7viXiAW0x8+4uvWn31HgI2e5Y00epYuyVoKaSY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Chen , Felix Kuehling , Alex Deucher , Sasha Levin Subject: [PATCH 5.10 026/186] drm/amdkfd: Reconcile the definition and use of oem_id in struct kfd_topology_device Date: Tue, 10 Sep 2024 11:32:01 +0200 Message-ID: <20240910092555.681135486@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240910092554.645718780@linuxfoundation.org> References: <20240910092554.645718780@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Chen [ Upstream commit 10f624ef239bd136cdcc5bbc626157a57b938a31 ] Currently oem_id is defined as uint8_t[6] and casted to uint64_t* in some use case. This would lead code scanner to complain about access beyond. Re-define it in union to enforce 8-byte size and alignment to avoid potential issue. Signed-off-by: Michael Chen Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdkfd/kfd_crat.h | 2 -- drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 3 +-- drivers/gpu/drm/amd/amdkfd/kfd_topology.h | 5 ++++- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.h b/drivers/gpu/drm/amd/amdkfd/kfd_crat.h index d54ceebd346b..30c70b3ab17f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.h @@ -42,8 +42,6 @@ #define CRAT_OEMTABLEID_LENGTH 8 #define CRAT_RESERVED_LENGTH 6 -#define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1) - /* Compute Unit flags */ #define COMPUTE_UNIT_CPU (1 << 0) /* Create Virtual CRAT for CPU */ #define COMPUTE_UNIT_GPU (1 << 1) /* Create Virtual CRAT for GPU */ diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c index 2b31c3066aaa..b5738032237e 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -906,8 +906,7 @@ static void kfd_update_system_properties(void) dev = list_last_entry(&topology_device_list, struct kfd_topology_device, list); if (dev) { - sys_props.platform_id = - (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; + sys_props.platform_id = dev->oem_id64; sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); sys_props.platform_rev = dev->oem_revision; } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h index 326d9b26b7aa..22476a939064 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h @@ -182,7 +182,10 @@ struct kfd_topology_device { struct attribute attr_gpuid; struct attribute attr_name; struct attribute attr_props; - uint8_t oem_id[CRAT_OEMID_LENGTH]; + union { + uint8_t oem_id[CRAT_OEMID_LENGTH]; + uint64_t oem_id64; + }; uint8_t oem_table_id[CRAT_OEMTABLEID_LENGTH]; uint32_t oem_revision; }; -- 2.43.0