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Honglei Huang aaa06e1609 libhsakmt/virtio: add non SVM mode in libhsakmt virtio driver and many fixes (#1756)
* libhsakmt/virtio: change shmem size to 80

Some DGPU props have a lot of information,
so it is necessary to increase the size of shmem.

Signed-off-by: Honglei Huang <honghuan@amd.com>

* libhsakmt/virtio: use BO handle instead of pointer in memory registration

Change vhsakmt_map_to_gpu() return type from void* to vhsakmt_bo_handle
to properly handle buffer object information. This allows access to
both the host address and resource ID needed for memory registration.

Signed-off-by: Honglei Huang <honghuan@amd.com>

* libhsakmt/virtio: Improve memory mapping logic

- Update vhsakmt_mappable() to check NoAddress flag and require HostAccess
- Remove mappable checks in cpu_map/unmap to allow all BOs to be mapped
- Set BO flags properly in vhsakmt_alloc_memory and scratch memory creation
- Ensure scratch memory is correctly flagged for proper handling

Signed-off-by: Honglei Huang <honghuan@amd.com>

* libhsakmt/virtio: add no svm mode for libhsakmt virtio

Add no svm mode for libhsakmt virtio driver, in no svm mode userptrs
need UMD to manage, so add interval tree to manage them.

New Features:
- Add augmented red-black tree based interval tree implementation
  * Implement RB-tree insertion, deletion, and color balancing
  * Provide interval query for fast overlapping range lookup
  * Based on Linux kernel's augmented rbtree implementation

- Improve userptr memory management
  * Use interval tree to efficiently track userptr memory regions
  * Support finding registered memory within given address ranges
  * Optimize memory mapping and unmapping performance

Signed-off-by: Honglei Huang <honghuan@amd.com>

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Signed-off-by: Honglei Huang <honghuan@amd.com>
2025-11-28 09:20:43 +08:00
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2025-11-26 08:33:27 -06:00