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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-23 00:09:13 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-23 00:09:13 -0400 |
| commit | d28e5bb94752ba523b826945409e5ad3206dad5a (patch) | |
| tree | e0247ceff689257e2246a8691fb448e1568bc952 /kernel/main.c | |
| parent | 7d6c789a469de154ee6d26a7fb9161ef7279a34a (diff) | |
| download | open-iov-d28e5bb94752ba523b826945409e5ad3206dad5a.tar.gz open-iov-d28e5bb94752ba523b826945409e5ad3206dad5a.zip | |
kernel: drop PCFG poison experiment and config-write spam, keep bus-info detail log
The poison test (fill every dword of BAR0 0x88000-0x88FFF, 0xB80000-
0xB80EFF, 0xC08000-0xC08EFF with 0x103) did not change the CUDA "Unknown
PCIe speed" failure, proving the failing BUS_GET_INFO_V2 index-3 data does
not come from any BAR0 mirror read. Combined with the QEMU config-space
behavior (link registers zeroed, type=0x92, 0x84 never read from us) the
value must come from the VGPU_STATIC_INFO branch in getBusInfos (pVSI->
pcieGpuLinkCaps), i.e. the guest needs the host vGPU static-info payload.
Cleanup: remove the poison loops and the per-write CFGWR log; keep the
once-per-init PCIe cap print and add per-entry BUS_GET_INFO_V2 logging
(index+data) for the ongoing CUDA/UVM work.
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/main.c b/kernel/main.c index 451fa55..3e50e28 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -744,12 +744,6 @@ static ssize_t nv_vgpu_vfio_dev_write(struct vfio_device *vdev, const char __use if (pos >= 0x70000000000ULL && pos < 0x70000000000ULL + 4096) { loff_t cfg_pos = pos - 0x70000000000ULL; ssize_t ret; - u8 wbuf[8]; - - if (count <= sizeof(wbuf) && !copy_from_user(wbuf, buf, count)) - nv_vgpu_info(vgpu, "CFGWR off=0x%llx count=%zu data=%*phN", - (unsigned long long)cfg_pos, count, - (int)count, wbuf); ret = nv_vgpu_config_write(vgpu, buf, count, &cfg_pos); if (ret > 0) |