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| author | Sunil Khatri <sunil.khatri@amd.com> | 2026-10-12 14:17:52 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-10-15 12:02:51 -0400 |
| commit | fb1977f2d205a7e64fbbabe76e239953584bdc3f (patch) | |
| tree | ea27d3546f3559950f382eca1d6df90dd749a3cd | |
| parent | ed73c946979771f050f05d7f00cbe9b7afd04059 (diff) | |
| download | linux-next-fb1977f2d205a7e64fbbabe76e239953584bdc3f.tar.gz linux-next-fb1977f2d205a7e64fbbabe76e239953584bdc3f.zip | |
drm/amdgpu: reserve SPM VMID on gfx8
Set vm_manager.spm_vmid to the top GFXHUB VMID so the SPM reservation
path hands out a fixed, isolated VMID on gfx8 instead of borrowing one
from the graphics pool.
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 3f9ec7427319..15592027e7c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -1123,6 +1123,10 @@ static int gmc_v8_0_sw_init(struct amdgpu_ip_block *ip_block) * amdkfd/MES user queues will use VMIDs 8-15 */ vmid_mask = GENMASK(7, 1); + + /* Reserve the last VMID for SPM */ + adev->vm_manager.spm_vmid = AMDGPU_NUM_VMID - 1; + amdgpu_vmid_mgr_set_vmid_mask(adev, vmid_mask, vmid_mask); amdgpu_vm_manager_init(adev); |