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authorDavid E. Garcia Porras <[email protected]>2026-08-18 15:00:22 -0600
committerAnup Patel <[email protected]>2026-09-03 13:37:34 +0530
commitd34a39df779aa55a2dd929717a32e48c3a80df66 (patch)
treeb28cd12ecca61fe406b5606264ef5f80dfb1fe48 /platform/common/objects.mk
parentd97cfb33ae1ac0d9eebce1a03c96497a1f8f4c67 (diff)
lib: sbi_pmu: Match raw event selector only against raw event map entries
sbi_pmu_event_get_info() walks hw_event_map[] to decide whether a requested event is supported. For SBI_PMU_EVENT_RAW_IDX and SBI_PMU_EVENT_RAW_V2_IDX it compares the requested event_data against temp->select / temp->select_mask without first checking that the map entry being examined is itself a raw event entry. Non-raw hardware event entries are added via sbi_pmu_add_hw_event_counter_map(), leave select and select_mask at zero, hence they satisfy: temp->select == (event_data & temp->select_mask) so the first non-raw entry visited will always match. The issue's observability depends purely on the ordering of hw_event_map[]: if the platform registers its raw events last, every raw event query, including unsupported ones, will be reported as supported. Fix it by checking event_idx against temp->start_idx and temp->end_idx before comparing select/select_mask. Fixes: e4345842168b ("lib: sbi_pmu: Implement SBI PMU event info function") Signed-off-by: David E. Garcia Porras <[email protected]> Reviewed-by: Anup Patel <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
Diffstat (limited to 'platform/common/objects.mk')
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