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 84A7014B08E; Thu, 1 Aug 2024 00:34:17 +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=1722472457; cv=none; b=Il0K/PosPu4+QjejOTFM9IghZQpjlXbIVopi28ArB0pfbhqW9gwbVE+d7zCGPFGksINwOJ8nq7q3sPhBSTZKGimNOzvEIQ5xxXnVpD2aq/ysxL+8HXcVwQmWKvqw5kFnoXEhG5fG9Ls3sKLJaAUAnVj+I3IDMoLUCT0lQBfwRlY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722472457; c=relaxed/simple; bh=smsbb38ggI07VwNa479JZwESL/QQKu27Zo1kWpqgAas=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZuIi+QXTjlwjijpJAy9iGKONXGpyFppuDB3q9mdQfBQ0Towmqklndjg3fMeBlzF3MNxtQWw6XA57Ru4yl28qJkLIjQgefneZWUxZQrNY4RdS+mW67j95gWaE/f0kQn1i2dpg5RMVPCFIVazP6fd0FGU/yGQ40KJ8Vw/+GbE8Y2I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UhL8nAds; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UhL8nAds" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A281C4AF10; Thu, 1 Aug 2024 00:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722472457; bh=smsbb38ggI07VwNa479JZwESL/QQKu27Zo1kWpqgAas=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UhL8nAdstGi0BWyKB09jPpDKJsgDLnSN+61ST0g9MldVhX7vRBR3JMuonPfYOvw97 yipuie0Ihpf62BCGOfgkYpFbmPiCyIM8OMSfMOdZou/yzQTpqUJsua1edNlm0hmhCM pFU7u3rM4onHwEx/17JqjOUVuvMJ/YjPOqa/UKyvaKMY+08CEoFJvGpwfFfrYXdDLv yfdkZP0mWu6y2dlG3UiUcb90lch+4eDZzpGi7eQSJGTmM3xf2oO0ANOjEsVSW10B6W D0AMZDcnzOUcacg0phv5jJDnKkn8tpIC9cZpgoZvO+2MUNUNCx0lAVbAwMO5EDhEOv QAK4UJOy7bE6A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Michael Chen , Felix Kuehling , Alex Deucher , Sasha Levin , Felix.Kuehling@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.15 18/47] drm/amdkfd: Reconcile the definition and use of oem_id in struct kfd_topology_device Date: Wed, 31 Jul 2024 20:31:08 -0400 Message-ID: <20240801003256.3937416-18-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801003256.3937416-1-sashal@kernel.org> References: <20240801003256.3937416-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.164 Content-Transfer-Encoding: 8bit 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 d54ceebd346b7..30c70b3ab17f1 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 98cca5f2b27f9..59e7ca0e84703 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -910,8 +910,7 @@ 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 a8db017c9b8ed..c2dbd75b9161c 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h @@ -184,7 +184,10 @@ 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