NVIDIA/open-gpu-kernel-modules
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russellcnv
2023-09-01 21:36:45 -07:00
parent 18b7303c54
commit 17546dbdda
122 changed files with 41587 additions and 34584 deletions
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25
kernel-open/nvidia-uvm/uvm_conf_computing.c
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@@ -1,5 +1,5 @@
/*******************************************************************************
Copyright (c) 2021 NVIDIA Corporation
Copyright (c) 2021-2023 NVIDIA Corporation
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
@@ -54,23 +54,26 @@ bool uvm_conf_computing_mode_is_hcc(const uvm_gpu_t *gpu)
return uvm_conf_computing_get_mode(gpu->parent) == UVM_GPU_CONF_COMPUTE_MODE_HCC;
}
NV_STATUS uvm_conf_computing_init_parent_gpu(const uvm_parent_gpu_t *parent)
void uvm_conf_computing_check_parent_gpu(const uvm_parent_gpu_t *parent)
{
UvmGpuConfComputeMode cc, sys_cc;
uvm_gpu_t *first;
uvm_gpu_t *first_gpu;
uvm_assert_mutex_locked(&g_uvm_global.global_lock);
// The Confidential Computing state of the GPU should match that of the
// system.
UVM_ASSERT(uvm_conf_computing_mode_enabled_parent(parent) == g_uvm_global.conf_computing_enabled);
// TODO: Bug 2844714: since we have no routine to traverse parent GPUs,
// find first child GPU and get its parent.
first = uvm_global_processor_mask_find_first_gpu(&g_uvm_global.retained_gpus);
if (!first)
return NV_OK;
first_gpu = uvm_global_processor_mask_find_first_gpu(&g_uvm_global.retained_gpus);
if (first_gpu == NULL)
return;
sys_cc = uvm_conf_computing_get_mode(first->parent);
cc = uvm_conf_computing_get_mode(parent);
return cc == sys_cc ? NV_OK : NV_ERR_NOT_SUPPORTED;
// All GPUs derive Confidential Computing status from their parent. By
// current policy all parent GPUs have identical Confidential Computing
// status.
UVM_ASSERT(uvm_conf_computing_get_mode(parent) == uvm_conf_computing_get_mode(first_gpu->parent));
}
static void dma_buffer_destroy_locked(uvm_conf_computing_dma_buffer_pool_t *dma_buffer_pool,