Commit 19422a9f authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo

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: default avatarAdrian Hunter <adrian.hunter@intel.com>
Tested-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1526548928-20790-7-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent dbbd34a6
...@@ -2321,7 +2321,12 @@ int machine__get_kernel_start(struct machine *machine) ...@@ -2321,7 +2321,12 @@ int machine__get_kernel_start(struct machine *machine)
machine->kernel_start = 1ULL << 63; machine->kernel_start = 1ULL << 63;
if (map) { if (map) {
err = map__load(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; machine->kernel_start = map->start;
} }
return err; return err;
......
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