For larger range allocation, if hmm_range_fault return -EBUSY, set retry
timeout based on 1 second for every 512MB, this is safe timeout value.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hmm_range->hmm_pfns = pfns;
hmm_range->start = start;
hmm_range->end = start + npages * PAGE_SIZE;
- timeout = jiffies + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT);
+
+ /* Assuming 512MB takes maxmium 1 second to fault page address */
+ timeout = max(npages >> 17, 1ULL) * HMM_RANGE_DEFAULT_TIMEOUT;
+ timeout = jiffies + msecs_to_jiffies(timeout);
retry:
hmm_range->notifier_seq = mmu_interval_read_begin(notifier);