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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-11-12 00:18:36 -0500 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-11-12 00:18:36 -0500 |
| commit | d1dc85a2cc729d39a3cfb45a01c7166cf08f7a92 (patch) | |
| tree | f930e5d1a02270f633421c1c41847efa5c57ab40 /wiki/open-iov.org/index.php?title=GPU_Support&action=info.html | |
| parent | 8c7bf2959c62743899dfdc6097dabfaebf227158 (diff) | |
| download | open-iov-d1dc85a2cc729d39a3cfb45a01c7166cf08f7a92.tar.gz open-iov-d1dc85a2cc729d39a3cfb45a01c7166cf08f7a92.zip | |
vgsp: default GPU GART size to 256 MiB (was 4096)
BUS_GET_INFO_V2 GPU_GART_SIZE at 4096 MiB made the guest RM allocate a
4 GiB system-memory GART object during X/GL init. That single allocation
is the 1048576-page nv_alloc_pages spike that OOM-killed or crashed the
12 GiB guest in c15-c22; with the 4 GiB FB-info over-report fixed and
UseSysmemPixmapAccel off, the GART was the remaining source.
c23 with bus_gart_mb=256 and the guest X config UseSysmemPixmapAccel=false:
X starts, MemFree stays 11 GB, no 1M-page allocation, and glxgears renders
2601 frames in 5 s (520 FPS) on the emulated vGPU. The default should not
reintroduce the fatal allocation; 0 remains available for the historical
A/B.
Evidence: handoff-meta-plan.md CONT.436, c23 X/gzdoom/glxgears logs.
Diffstat (limited to 'wiki/open-iov.org/index.php?title=GPU_Support&action=info.html')
0 files changed, 0 insertions, 0 deletions