Commit bffa91da authored by Christian König's avatar Christian König Committed by Alex Deucher

drm/amdkfd: start using tlb_seq from the VM subsystem

Instead of trying to figure out if a TLB flush is necessary or not use
the information provided by the VM subsystem now.
Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: Philip Yang<Philip.Yang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5255e146
......@@ -705,6 +705,7 @@ struct kfd_process_device {
/* VM context for GPUVM allocations */
struct file *drm_file;
void *drm_priv;
uint64_t tlb_seq;
/* GPUVM allocations storage */
struct idr alloc_idr;
......
......@@ -1560,6 +1560,7 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
return ret;
}
pdd->drm_priv = drm_file->private_data;
pdd->tlb_seq = 0;
ret = kfd_process_device_reserve_ib_mem(pdd);
if (ret)
......@@ -1949,8 +1950,14 @@ int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process,
void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type)
{
struct amdgpu_vm *vm = drm_priv_to_vm(pdd->drm_priv);
uint64_t tlb_seq = amdgpu_vm_tlb_seq(vm);
struct kfd_dev *dev = pdd->dev;
if (pdd->tlb_seq == tlb_seq)
return;
pdd->tlb_seq = tlb_seq;
if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
/* Nothing to flush until a VMID is assigned, which
* only happens when the first queue is created.
......
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