Bug 297188 - graphics/drm-kmod: Panic: vmap_pfn() is not implemented for Intel ARC A310 GPU
Summary: graphics/drm-kmod: Panic: vmap_pfn() is not implemented for Intel ARC A310 GPU
Status: Closed FIXED
Alias: None
Product: Ports & Packages
Classification: Unclassified
Component: Individual Port(s) (show other bugs)
Version: Latest
Hardware: amd64 Any
: --- Affects Some People
Assignee: freebsd-x11 (Nobody)
URL:
Keywords: crash
Depends on:
Blocks:
 
Reported: 2026-07-31 08:21 UTC by Michael Dexter
Modified: 2026-07-31 19:43 UTC (History)
0 users

See Also:
bugzilla: maintainer-feedback? (x11)

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Description Michael Dexter freebsd_triage 2026-07-31 08:21:10 UTC 
Host: FreeBSD 15.1p2
Hardware: HP Z4 G4 Workstation Intel i7-7800X
GPU: Sparkle Intel Arc A310 ECO, 4GB GDDR6

Loading i915kms.ko results in:
panic: vmap_pfn() is not implemented

Discussing with colleagues: 15.1 may support vmap_pfn() but the port does not appear to be built to correctly use it, and manually building it from source results in "Fatal trap 12 in kernel mode".

What additional information would be helpful?
Comment 1 Michael Dexter freebsd_triage 2026-07-31 19:43:10 UTC 
Hopefully fixed: I will give it a try on CURRENT and re-open if not:

https://reviews.freebsd.org/D54225