NVIDIA/open-gpu-kernel-modules
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russellcnv
2025-10-27 13:41:40 -07:00
parent 1babfa3dab
commit e2dbb3d99c
74 changed files with 55029 additions and 53585 deletions
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18
kernel-open/nvidia-uvm/uvm_gpu.c
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@@ -107,6 +107,7 @@ static void fill_parent_gpu_info(uvm_parent_gpu_t *parent_gpu, const UvmGpuInfo
}
parent_gpu->nvswitch_info.is_nvswitch_connected = gpu_info->connectedToSwitch;
parent_gpu->peer_address_info.is_direct_connected = gpu_info->nvlDirectConnect;
// nvswitch is routed via physical pages, where the upper 13-bits of the
// 47-bit address space holds the routing information for each peer.
@@ -115,6 +116,9 @@ static void fill_parent_gpu_info(uvm_parent_gpu_t *parent_gpu, const UvmGpuInfo
parent_gpu->nvswitch_info.fabric_memory_window_start = gpu_info->nvswitchMemoryWindowStart;
parent_gpu->nvswitch_info.egm_fabric_memory_window_start = gpu_info->nvswitchEgmMemoryWindowStart;
}
else if (parent_gpu->peer_address_info.is_direct_connected) {
parent_gpu->peer_address_info.peer_gpa_memory_window_start = gpu_info->nvlDirectConnectMemoryWindowStart;
}
parent_gpu->ats.non_pasid_ats_enabled = gpu_info->nonPasidAtsSupport;
@@ -2110,6 +2114,16 @@ bool uvm_parent_gpus_are_nvswitch_connected(const uvm_parent_gpu_t *parent_gpu0,
return false;
}
bool uvm_parent_gpus_are_direct_connected(const uvm_parent_gpu_t *parent_gpu0, const uvm_parent_gpu_t *parent_gpu1)
{
if (parent_gpu0 != parent_gpu1 &&
parent_gpu0->peer_address_info.is_direct_connected &&
parent_gpu1->peer_address_info.is_direct_connected)
return true;
return false;
}
NV_STATUS uvm_gpu_check_ecc_error_no_rm(uvm_gpu_t *gpu)
{
// We may need to call service_interrupts() which cannot be done in the top
@@ -3068,7 +3082,9 @@ uvm_gpu_phys_address_t uvm_gpu_peer_phys_address(uvm_gpu_t *owning_gpu, NvU64 ad
{
uvm_aperture_t aperture = uvm_gpu_peer_aperture(accessing_gpu, owning_gpu);
if (uvm_parent_gpus_are_nvswitch_connected(accessing_gpu->parent, owning_gpu->parent))
if (uvm_parent_gpus_are_direct_connected(accessing_gpu->parent, owning_gpu->parent))
address += owning_gpu->parent->peer_address_info.peer_gpa_memory_window_start;
else if (uvm_parent_gpus_are_nvswitch_connected(accessing_gpu->parent, owning_gpu->parent))
address += owning_gpu->parent->nvswitch_info.fabric_memory_window_start;
return uvm_gpu_phys_address(aperture, address);