NVIDIA/open-gpu-kernel-modules
1
0
Fork 0
mirror of https://github.com/NVIDIA/open-gpu-kernel-modules.git synced 2026-01-30 21:19:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

575.64

Browse Source
This commit is contained in:
Maneet Singh
2025-06-16 19:28:19 -07:00
parent 30e15d79de
commit fade1f7b20
35 changed files with 50249 additions and 49935 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
kernel-open/nvidia-uvm/uvm_ats_faults.c
View File

@@ -757,6 +757,20 @@ NV_STATUS uvm_ats_service_access_counters(uvm_gpu_va_space_t *gpu_va_space,
&ats_context->access_counters.accessed_mask,
&ats_context->prefetch_state.residency_mask);
// Pretend that pages that are already resident at the destination GPU were
// migrated now. This makes sure that the access counter is cleared even if
// the accessed pages, were already resident on the target.
// TODO: Bug 5296998: [uvm][ats] Not clearing stale access counter
// notifications can lead to missed migrations
// The same problem of stale notification exists for migration to other
// locations than local vidmem. However, stale notifications to data
// migrated to another remote location are identical to those triggered
// by accessing memory that cannot or should not be migrated.
if (uvm_id_equal(ats_context->residency_id, gpu_va_space->gpu->id)) {
uvm_page_mask_copy(&ats_context->access_counters.migrated_mask,
&ats_context->prefetch_state.residency_mask);
}
for_each_va_block_subregion_in_mask(subregion, &ats_context->access_counters.accessed_mask, region) {
NV_STATUS status;
NvU64 start = base + (subregion.first * PAGE_SIZE);
@@ -769,7 +783,7 @@ NV_STATUS uvm_ats_service_access_counters(uvm_gpu_va_space_t *gpu_va_space,
status = service_ats_requests(gpu_va_space, vma, start, length, access_type, service_type, ats_context);
// clear access counters if pages were migrated or migration needs to
// Clear access counters if pages were migrated or migration needs to
// be retried
if (status == NV_OK || status == NV_ERR_BUSY_RETRY)
uvm_page_mask_region_fill(migrated_mask, subregion);