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CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:satlexmb07.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(376014)(82310400026)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Dec 2025 14:28:55.3050 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cafda926-9f8c-474f-19ad-08de30e5f542 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000099.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6658 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" For gfx9, bind MQD in GART with mtype RW to enable caching, to reduce queue switch latency. Signed-off-by: Philip Yang --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index e553cf411191..5f58cff2c28b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -841,6 +841,8 @@ static void amdgpu_ttm_gart_bind_gfx9_mqd(struct amdgpu_device *adev, int i; uint64_t ctrl_flags = AMDGPU_PTE_MTYPE_VG10(flags, AMDGPU_MTYPE_NC); + flags = AMDGPU_PTE_MTYPE_VG10(flags, AMDGPU_MTYPE_RW); + pages_per_xcc = total_pages; do_div(pages_per_xcc, num_xcc); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 139642eacdd0..4dd15767a722 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -101,6 +101,7 @@ struct amdgpu_bo_vm; AMDGPU_PTE_MTYPE_VG10_SHIFT(mtype)) #define AMDGPU_MTYPE_NC 0 +#define AMDGPU_MTYPE_RW 1 #define AMDGPU_MTYPE_CC 2 #define AMDGPU_PTE_DEFAULT_ATC (AMDGPU_PTE_SYSTEM \ -- 2.50.1