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russellcnv
2025-11-17 09:42:27 -08:00
parent e2dbb3d99c
commit 5237658d5c
53 changed files with 701 additions and 274 deletions
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17
kernel-open/nvidia-uvm/uvm_map_external.c
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@@ -1276,11 +1276,20 @@ void uvm_ext_gpu_map_destroy(uvm_va_range_external_t *external_range,
range_tree = uvm_ext_gpu_range_tree(external_range, mapped_gpu);
// Perform L2 cache invalidation for noncoherent sysmem mappings.
// This is done only on systems with write-back cache which is iGPUs as of now.
// Perform L2 cache invalidation for cached peer and sysmem mappings.
if (ext_gpu_map->need_l2_invalidate_at_unmap) {
UVM_ASSERT(ext_gpu_map->gpu->parent->is_integrated_gpu);
status = uvm_mmu_l2_invalidate_noncoh_sysmem(mapped_gpu);
uvm_aperture_t aperture;
// Peer cache invalidation is not targeted to a specific peer, so we
// just use UVM_APERTURE_PEER(0).
if (ext_gpu_map->is_egm)
aperture = UVM_APERTURE_PEER(0);
else if (ext_gpu_map->is_sysmem)
aperture = UVM_APERTURE_SYS;
else
aperture = UVM_APERTURE_PEER(0);
status = uvm_mmu_l2_invalidate(mapped_gpu, aperture);
UVM_ASSERT(status == NV_OK);
}