diff options
| author | Adrian Hunter | 2021-02-18 11:57:58 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2021-02-18 16:15:08 -0300 |
| commit | 65faca5ce8629495092e9ef0731a31a6b7d9234f (patch) | |
| tree | bb5fa96ec02a5c9944b79784d936993478dc99d8 /tools/perf | |
| parent | 6e86bfdc4a600accec9f246aab655c5fbf4309c3 (diff) | |
perf intel-pt: Allow for a guest kernel address filter
Handling TIP.PGD for an address filter for a guest kernel is the same as a
host kernel, but user space decoding, and hence address filters, are not
supported.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210218095801.19576-9-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/intel-pt.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 29d871718995..546d512b300a 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -792,8 +792,14 @@ static int __intel_pt_pgd_ip(uint64_t ip, void *data) u8 cpumode; u64 offset; - if (ip >= ptq->pt->kernel_start) + if (ptq->state->to_nr) { + if (intel_pt_guest_kernel_ip(ip)) + return intel_pt_match_pgd_ip(ptq->pt, ip, ip, NULL); + /* No support for decoding guest user space */ + return -EINVAL; + } else if (ip >= ptq->pt->kernel_start) { return intel_pt_match_pgd_ip(ptq->pt, ip, ip, NULL); + } cpumode = PERF_RECORD_MISC_USER; |