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This commit is contained in:
Andy Ritger
2022-11-10 08:39:33 -08:00
parent 7c345b838b
commit 758b4ee818
1323 changed files with 262135 additions and 60754 deletions
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10
kernel-open/nvidia-uvm/uvm_gpu_semaphore.c
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@@ -118,6 +118,13 @@ static bool is_canary(NvU32 val)
return (val & ~UVM_SEMAPHORE_CANARY_MASK) == UVM_SEMAPHORE_CANARY_BASE;
}
// Can the GPU access the semaphore, i.e., can Host/Esched address the semaphore
// pool?
static bool gpu_can_access_semaphore_pool(uvm_gpu_t *gpu, uvm_rm_mem_t *rm_mem)
{
return ((uvm_rm_mem_get_gpu_uvm_va(rm_mem, gpu) + rm_mem->size - 1) < gpu->parent->max_host_va);
}
static NV_STATUS pool_alloc_page(uvm_gpu_semaphore_pool_t *pool)
{
NV_STATUS status;
@@ -142,6 +149,9 @@ static NV_STATUS pool_alloc_page(uvm_gpu_semaphore_pool_t *pool)
if (status != NV_OK)
goto error;
// Verify the GPU can access the semaphore pool.
UVM_ASSERT(gpu_can_access_semaphore_pool(pool->gpu, pool_page->memory));
// All semaphores are initially free
bitmap_fill(pool_page->free_semaphores, UVM_SEMAPHORE_COUNT_PER_PAGE);