diff options
| author | Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com> | 2026-09-18 13:01:30 +0200 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2026-09-22 18:28:06 -0400 |
| commit | 0646547a67d25c407f5a4ac71b4eefe8b941202b (patch) | |
| tree | 08452feb579532cda913f14ae55d81e2cc3477d9 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 9453c528fc909076468ff10df1c2e334ca5a9b00 (diff) | |
| download | linux-0646547a67d25c407f5a4ac71b4eefe8b941202b.tar.gz linux-0646547a67d25c407f5a4ac71b4eefe8b941202b.zip | |
drm/xe/pf: Keep VF LMEM BAR size low if no VFs enabled
When VFs are enabled on dGFX the driver resizes the PF VF_LMEM_BAR to
fit the requested layout. After VFs are disabled the PF VF BAR
size is left as-is. On platforms with tight MMIO apertures a
subsequent unplug/rescan followed by another enable may fail with:
"VF BAR …: can't assign; no space"
because the PCI core reserves address space based on the (now large) VF
template, often multiplied by totalvfs.
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/5937
Fixes: 94eae6ee4c2d ("drm/xe/pf: Set VF LMEM BAR size")
Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260918110130.700332-1-marcin.bernatowicz@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions