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drm/amdkfd: Have kfd driver use same PASID values from graphic driver

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Current kfd driver has its own PASID value for a kfd process and uses it to
locate vm at interrupt handler or mapping between kfd process and vm. That
design is not working when a physical gpu device has multiple spatial
partitions, ex: adev in CPX mode. This patch has kfd driver use same pasid
values that graphic driver generated which is per vm per pasid.

These pasid values are passed to fw/hardware. We do not need change interrupt
handler though more pasid values are used. Also, pasid values at log are
replaced by user process pid; pasid values are not exposed to user. Users see
their process pids that have meaning in user space.

Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaogang Chen
2025-01-13 17:35:59 -06:00
committed by Alex Deucher
parent ca44922107
commit 8544374c0f
16 changed files with 197 additions and 182 deletions
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21
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
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@@ -1529,27 +1529,6 @@ static void amdgpu_amdkfd_gpuvm_unpin_bo(struct amdgpu_bo *bo)
amdgpu_bo_unreserve(bo);
}
int amdgpu_amdkfd_gpuvm_set_vm_pasid(struct amdgpu_device *adev,
struct amdgpu_vm *avm, u32 pasid)
{
int ret;
/* Free the original amdgpu allocated pasid,
* will be replaced with kfd allocated pasid.
*/
if (avm->pasid) {
amdgpu_pasid_free(avm->pasid);
amdgpu_vm_set_pasid(adev, avm, 0);
}
ret = amdgpu_vm_set_pasid(adev, avm, pasid);
if (ret)
return ret;
return 0;
}
int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct amdgpu_device *adev,
struct amdgpu_vm *avm,
void **process_info,