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drm/amdgpu: stop reserving VMIDs to enforce isolation

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That was quite troublesome for gang submit. Completely drop this
approach and enforce the isolation separately.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2025-01-27 16:27:51 +01:00
committed by Alex Deucher
parent b7fbcd77bb
commit db1e58ec86
4 changed files with 6 additions and 19 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
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@@ -411,7 +411,7 @@ int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
if (r || !idle)
goto error;
if (amdgpu_vmid_uses_reserved(adev, vm, vmhub)) {
if (amdgpu_vmid_uses_reserved(vm, vmhub)) {
r = amdgpu_vmid_grab_reserved(vm, ring, job, &id, fence);
if (r || !id)
goto error;
@@ -464,19 +464,14 @@ error:
/*
* amdgpu_vmid_uses_reserved - check if a VM will use a reserved VMID
* @adev: amdgpu_device pointer
* @vm: the VM to check
* @vmhub: the VMHUB which will be used
*
* Returns: True if the VM will use a reserved VMID.
*/
bool amdgpu_vmid_uses_reserved(struct amdgpu_device *adev,
struct amdgpu_vm *vm, unsigned int vmhub)
bool amdgpu_vmid_uses_reserved(struct amdgpu_vm *vm, unsigned int vmhub)
{
return vm->reserved_vmid[vmhub] ||
(adev->enforce_isolation[(vm->root.bo->xcp_id != AMDGPU_XCP_NO_PARTITION) ?
vm->root.bo->xcp_id : 0] &&
AMDGPU_IS_GFXHUB(vmhub));
return vm->reserved_vmid[vmhub];
}
int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev,