From: Alex Deucher Date: Thu, 26 Mar 2026 17:50:03 +0000 (-0400) Subject: drm/amdgpu/sdma7.1: add support for disable_kq X-Git-Tag: v7.1-rc1~24^2~3^2~50 X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=80d4d3a45b86816e9a99de4e3d6640ff82707dac;p=thirdparty%2Flinux.git drm/amdgpu/sdma7.1: add support for disable_kq Plumb in support for disabling kernel queues and make it the default. For testing, kernel queues can be re-enabled by setting amdgpu.user_queue=0. Kernel queues are still created for use by the kernel driver for memory management, etc., just not user submissions. Reviewed-by: Prike Liang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v7_1.c b/drivers/gpu/drm/amd/amdgpu/sdma_v7_1.c index f20e0fc3fc74..061934a2e93a 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v7_1.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v7_1.c @@ -1268,6 +1268,18 @@ static int sdma_v7_1_early_init(struct amdgpu_ip_block *ip_block) struct amdgpu_device *adev = ip_block->adev; int r; + switch (amdgpu_user_queue) { + case -1: + default: + adev->sdma.no_user_submission = true; + adev->sdma.disable_uq = true; + break; + case 0: + adev->sdma.no_user_submission = false; + adev->sdma.disable_uq = true; + break; + } + r = amdgpu_sdma_init_microcode(adev, 0, true); if (r) { DRM_ERROR("Failed to init sdma firmware!\n");