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Thu, 20 Aug 2026 09:04:48 -0500 From: Alex Deucher To: CC: Alex Deucher Subject: [PATCH] drm/amdgpu/gfx8: only apply compute quantums to KCQs Date: Thu, 20 Aug 2026 10:04:33 -0400 Message-ID: <20260820140433.2875442-1-alexander.deucher@amd.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF00036F3F:EE_|SJ0PR12MB8140:EE_ X-MS-Office365-Filtering-Correlation-Id: d55c652a-604a-480e-4ae0-08defec3ffa9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|23010399003|376014|1800799024|36860700016|82310400026|11063799006|10067099003|56012099006|13003099007|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF00036F3F.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB8140 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" Don't apply to KIQ. Seems to cause problems on KIQ on some ARM platforms. Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5658 Fixes: 91cf34bc5a55 ("drm/amdgpu/gfx8: align mqd settings with KFD") Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index f7c2b149acd0a..4241453e0ec8b 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -4546,9 +4546,11 @@ static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring) /* set static priority for a queue/ring */ gfx_v8_0_mqd_set_priority(ring, mqd); tmp = RREG32(mmCP_HQD_QUANTUM); - tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_EN, 1); - tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_SCALE, 1); - tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 10); + if (ring != &adev->gfx.kiq[0].ring) { + tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_EN, 1); + tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_SCALE, 1); + tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 10); + } mqd->cp_hqd_quantum = tmp; /* map_queues packet doesn't need activate the queue, -- 2.55.0