Jan reported failing ltp test for pt. It looks like the reason
is commit 38bb8d77d0b9, that did not keep the TOPA_SHIFT for
entry base, adding it back.
[1]
https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/tracing/pt_test/pt_test.c
Reported-by: Jan Stancek
Fixes: 38bb8d77d0b9 ("perf/x86/intel/pt: Split ToPA metadata and page layout")
Signed-off-by: Jiri Olsa
---
arch/x86/events/intel/pt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 74e80ed9c6c4..05e43d0f430b 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -627,7 +627,7 @@ static struct topa *topa_alloc(int cpu, gfp_t gfp)
* link as the 2nd entry in the table
*/
if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries)) {
- TOPA_ENTRY(>topa, 1)->base = page_to_phys(p);
+ TOPA_ENTRY(>topa, 1)->base = page_to_phys(p) >> TOPA_SHIFT;
TOPA_ENTRY(>topa, 1)->end = 1;
}
--
2.21.0
