diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2026-08-05 08:59:04 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2026-10-04 17:02:05 +0000 |
| commit | af06fba45746058ba8f983a0ac2f457a3404edba (patch) | |
| tree | b6f4300772621f4fb50ab7c9b4f80a7436cad889 /tools/perf/scripts/python/task-analyzer.py | |
| parent | 0326269ed73529cdf821664b6176814cde9ca374 (diff) | |
perf/cxl: Accept an overflow interrupt on MSI message number 0
cxl_pmu_probe() rejects the PMU when info->irq <= 0, but at that point the
field still holds the MSI/MSI-X message number the device signals overflow
on, not a Linux virq. That number is 0-based, and -1 means no interrupt
support. Message number 0 is valid and pci_irq_vector() takes a 0-based
index, so a compliant device signalling on the first vector fails to probe.
Reject only the no-interrupt case, matching how the CXL mailbox and event
interrupts handle it.
Fixes: 5d7107c72796 ("perf: CXL Performance Monitoring Unit driver")
Reported-by: sashiko-bot@kernel.org
Closes: https://sashiko.dev/#/patchset/20260715191454.459673-1-dave@stgolabs.net?part=1
Assisted-by: Claude:claude-opus-4-8
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Richard Cheng <icheng@nvidia.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions