Pcie transfer performance#126

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amd-vserbu wants to merge 25 commits into

amd-vserbu:perf/pcie-transfer-performance

Commits on Jun 17, 2026

Added slash_compat.h force include and fix from_timer backport issue for RHEL 9.8
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driver: large-page qdma transfers, NoC channel steering, libqdma patches
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libvrtd: hugepage host buffers and granule-aware partial sync
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smi: validate bandwidth modes with raw SLASH and stock qdma backends
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packaging: ship libqdma patches, add deps, harden install test, ignore /tmp
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driver: guard libqdma pr_fmt under force-included compat header
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driver: verify qdma host-profile readback and add tunable hugepage descriptor size
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smi: add validate buffer placement, channel allocation, and bandwidth knobs
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docs: document new validate placement and bandwidth options
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Added 4k|2M explicit page specification
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driver: add qdma registered-buffer abi with pinned, pre-dma-mapped transfers
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libslash: add qdma buffer register/unregister/transfer wrappers and mock
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tests: cover qdma registered-buffer kselftest abi
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docs: document qdma registered-buffer abi
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smi: add --ring-size-index and use registered buffers for raw transfers
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docs: document validate --ring-size-index option
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vrtd: plumb mm-channel selection through buffer open
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driver+libslash: added transfer performance hint
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vrt/vrtd: use new performance buffer ioctl api
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qdma stack: change policy from dual-channel to the more complex v80 policy
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driver+vrt+smi: drop libqdma sg/channel patches, make transfers 4 KiB-only
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Changed API to kernel allocated-buffers
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vrtd: track client ownership on raw buffers and close per-owner
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Commits on Jun 19, 2026

Use new qdma api for design writer
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Commits on Jun 22, 2026

vrtd: wrap design writer transfers in pdi aperture
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