The following commit has been merged into the perf/core branch of tip: Commit-ID: 0f9e0d7928d8e88d57b1482effab70edb9741ce1 Gitweb: https://git.kernel.org/tip/0f9e0d7928d8e88d57b1482effab70edb9741ce1 Author: Namhyung Kim <namhyung@xxxxxxxxxx> AuthorDate: Thu, 30 Nov 2023 11:52:46 +05:30 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Thu, 30 Nov 2023 09:34:40 +01:00 perf/x86/amd: Reject branch stack for IBS events The AMD IBS PMU doesn't handle branch stacks, so it should not accept events with brstack. Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx> Signed-off-by: Ravi Bangoria <ravi.bangoria@xxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20231130062246.290-1-ravi.bangoria@xxxxxxx --- arch/x86/events/amd/ibs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 6911c53..e91970b 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -287,6 +287,9 @@ static int perf_ibs_init(struct perf_event *event) if (config & ~perf_ibs->config_mask) return -EINVAL; + if (has_branch_stack(event)) + return -EOPNOTSUPP; + ret = validate_group(event); if (ret) return ret;
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