NVIDIA/open-gpu-kernel-modules
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This commit is contained in:
Bernhard Stoeckner
2024-12-05 16:37:35 +01:00
parent d5a0858f90
commit 9d0b0414a5
39 changed files with 457 additions and 216 deletions
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5
kernel-open/nvidia-uvm/uvm_hmm.c
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@@ -184,7 +184,7 @@ static void hmm_copy_devmem_page(struct page *dst_page, struct page *src_page)
gpu = uvm_gpu_chunk_get_gpu(gpu_chunk);
status = uvm_mmu_chunk_map(gpu_chunk);
if (status != NV_OK)
goto out_zero;
goto out;
status = uvm_parent_gpu_map_cpu_pages(gpu->parent, dst_page, PAGE_SIZE, &dma_addr);
if (status != NV_OK)
@@ -215,7 +215,7 @@ out_unmap_cpu:
out_unmap_gpu:
uvm_mmu_chunk_unmap(gpu_chunk, NULL);
out_zero:
out:
// We can't fail eviction because we need to free the device-private pages
// so the GPU can be unregistered. So the best we can do is warn on any
// failures and zero the uninitialised page. This could result in data loss
@@ -245,6 +245,7 @@ static NV_STATUS uvm_hmm_pmm_gpu_evict_pfn(unsigned long pfn)
}
lock_page(dst_page);
hmm_copy_devmem_page(dst_page, migrate_pfn_to_page(src_pfn));
dst_pfn = migrate_pfn(page_to_pfn(dst_page));
migrate_device_pages(&src_pfn, &dst_pfn, 1);