perf/x86/intel/pt: Fix base for single entry topa

Jan reported failing ltp test for PT:

  https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/tracing/pt_test/pt_test.c

It looks like the reason is this new commit added in this v5.4 merge window:

  38bb8d7 ("perf/x86/intel/pt: Split ToPA metadata and page layout")

which did not keep the TOPA_SHIFT for entry base.

Add it back.

Reported-by: Jan Stancek <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Fixes: 38bb8d7 ("perf/x86/intel/pt: Split ToPA metadata and page layout")
Link: https://lkml.kernel.org/r/[email protected]
[ Minor changelog edits. ]
Signed-off-by: Ingo Molnar <[email protected]>

Author: olsajiri

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(&tp->topa, 1)->base = page_to_phys(p);
+		TOPA_ENTRY(&tp->topa, 1)->base = page_to_phys(p) >> TOPA_SHIFT;
 		TOPA_ENTRY(&tp->topa, 1)->end = 1;
 	}