diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2021-04-19 21:51:27 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-28 23:36:05 -0400 |
| commit | 4999e398e281b336c7e08a3bf0da014d9cc2119f (patch) | |
| tree | 48e274d627cfed651f51d84e37df5034e869f991 /drivers/gpu | |
| parent | drm/amdkfd: fix spelling mistake in packet manager (diff) | |
| download | linux-4999e398e281b336c7e08a3bf0da014d9cc2119f.tar.gz linux-4999e398e281b336c7e08a3bf0da014d9cc2119f.zip | |
drm/amdkfd: retry validation to recover range
GPU vm retry fault recover range need retry validation if
1. range is split in parallel by unmap while recover
2. range migrate to system memory and range is updated in system
memory while recover
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index e4ce97ab6e26..30d142f6272f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1402,11 +1402,13 @@ static int svm_range_validate_and_map(struct mm_struct *mm, svm_range_lock(prange); if (!prange->actual_loc) { if (amdgpu_hmm_range_get_pages_done(hmm_range)) { + pr_debug("hmm update the range, need validate again\n"); r = -EAGAIN; goto unlock_out; } } if (!list_empty(&prange->child_list)) { + pr_debug("range split by unmap in parallel, validate again\n"); r = -EAGAIN; goto unlock_out; } @@ -2355,6 +2357,10 @@ out_unlock_svms: out: kfd_unref_process(p); + if (r == -EAGAIN) { + pr_debug("recover vm fault later\n"); + r = 0; + } return r; } |