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This commit is contained in:
Bernhard Stoeckner
2024-03-19 16:56:28 +01:00
parent 12933b2d3c
commit 3bf16b890c
78 changed files with 1400 additions and 590 deletions
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19
kernel-open/nvidia-uvm/uvm_gpu.h
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@@ -160,6 +160,10 @@ struct uvm_service_block_context_struct
// Pages whose permissions need to be revoked from other processors
uvm_page_mask_t revocation_mask;
// Temporary mask used in service_va_block_locked() in
// uvm_gpu_access_counters.c.
uvm_processor_mask_t update_processors;
struct
{
// Per-processor mask with the pages that will be resident after
@@ -593,16 +597,21 @@ typedef enum
UVM_GPU_LINK_MAX
} uvm_gpu_link_type_t;
// UVM does not support P2P copies on pre-Pascal GPUs. Pascal+ GPUs only
// support virtual addresses in P2P copies. Therefore, a peer identity mapping
// needs to be created.
// Ampere+ GPUs support physical peer copies, too, so identity mappings are not
// needed
typedef enum
{
// Peer copies can be disallowed for a variety of reasons. For example,
// P2P transfers are disabled in pre-Pascal GPUs because there is no
// compelling use case for direct peer migrations.
UVM_GPU_PEER_COPY_MODE_UNSUPPORTED,
// Pascal+ GPUs support virtual addresses in P2P copies. Virtual peer copies
// require the creation of peer identity mappings.
UVM_GPU_PEER_COPY_MODE_VIRTUAL,
// Ampere+ GPUs support virtual and physical peer copies. Physical peer
// copies do not depend on peer identity mappings.
UVM_GPU_PEER_COPY_MODE_PHYSICAL,
UVM_GPU_PEER_COPY_MODE_COUNT
} uvm_gpu_peer_copy_mode_t;