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drm/amdgpu/gmc12: add amdgpu_vm_handle_fault() handling

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We need to call amdgpu_vm_handle_fault() on page fault
on all gfx9 and newer parts to properly update the
page tables, not just for recoverable page faults.

Cc: stable@vger.kernel.org
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2025-11-13 15:57:43 -05:00
parent 3f2289b56c
commit ff28ff98db
1 changed files with 27 additions and 0 deletions
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27
drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
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@@ -91,6 +91,8 @@ static int gmc_v12_0_process_interrupt(struct amdgpu_device *adev,
struct amdgpu_iv_entry *entry)
{
struct amdgpu_vmhub *hub;
bool retry_fault = !!(entry->src_data[1] & 0x80);
bool write_fault = !!(entry->src_data[1] & 0x20);
uint32_t status = 0;
u64 addr;
@@ -102,6 +104,31 @@ static int gmc_v12_0_process_interrupt(struct amdgpu_device *adev,
else
hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
if (retry_fault) {
/* Returning 1 here also prevents sending the IV to the KFD */
/* Process it only if it's the first fault for this address */
if (entry->ih != &adev->irq.ih_soft &&
amdgpu_gmc_filter_faults(adev, entry->ih, addr, entry->pasid,
entry->timestamp))
return 1;
/* Delegate it to a different ring if the hardware hasn't
* already done it.
*/
if (entry->ih == &adev->irq.ih) {
amdgpu_irq_delegate(adev, entry, 8);
return 1;
}
/* Try to handle the recoverable page faults by filling page
* tables
*/
if (amdgpu_vm_handle_fault(adev, entry->pasid, 0, 0, addr,
entry->timestamp, write_fault))
return 1;
}
if (!amdgpu_sriov_vf(adev)) {
/*
* Issue a dummy read to wait for the status register to