diff options
| author | Adrian Hunter <[email protected]> | 2018-05-17 12:21:54 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2018-05-19 06:42:51 -0300 |
| commit | 19422a9f2a3be7f3a046285ffae4cbb571aa853a (patch) | |
| tree | 03858af094a74f2a0b6c09de1f6f231fcb9334ee | |
| parent | dbbd34a666ee117d0e39e71a47f38f02c4a5c698 (diff) | |
perf tools: Fix kernel_start for PTI on x86
Opickn x86_64, PTI entry trampolines are less than the start of kernel text,
but still above 2^63. So leave kernel_start = 1ULL << 63 for x86_64.
Signed-off-by: Adrian Hunter <[email protected]>
Tested-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/machine.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 107bae7676b1..e011a7160380 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -2321,7 +2321,12 @@ int machine__get_kernel_start(struct machine *machine) machine->kernel_start = 1ULL << 63; if (map) { err = map__load(map); - if (!err) + /* + * On x86_64, PTI entry trampolines are less than the + * start of kernel text, but still above 2^63. So leave + * kernel_start = 1ULL << 63 for x86_64. + */ + if (!err && !machine__is(machine, "x86_64")) machine->kernel_start = map->start; } return err; |