maintainer-feedback requested: [Bug 296448] graphics/drm-612-kmod x11 startup failure with lkpi_vmf_insert_pfn_prot_locked: page rename failed: page iked: page rename failed: page is mapped

Bugzilla Automation <[email protected]> has asked freebsd-x11 (Nobody)
<[email protected]> for maintainer-feedback:
Bug 296448: graphics/drm-612-kmod x11 startup failure with
lkpi_vmf_insert_pfn_prot_locked: page rename failed: page iked: page rename
failed: page is mapped
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296448



--- Description ---
on a 16-CURRENT system with iGPU intel i5 650, drm-612-kmod results in failure
of x11 with lkpi_vmf_insert_pfn_prot_locked: page rename failed: page iked:
page rename failed: page is mapped,the only method that seems to work to get
x11 show up instead of a blackscreen is setting AccelMethod to none
vt loads and shows up fine until startx
x11 on the same 16-CURRENT system work fine with drm-61-kmod and drm-66-kmod
without needing to set Accelmethod to none

i have attached some drm logs i have collected using
compat.linuxkpi.i915_mmio_debug=1
compat.linuxkpi.drm_debug=0x1e
compat.linuxkpi.rcu_debug=1
compat.linuxkpi.debug=1

the issue seems similar to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296195