From 65faca5ce8629495092e9ef0731a31a6b7d9234f Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 18 Feb 2021 11:57:58 +0200 Subject: 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 Acked-by: Andi Kleen Cc: Alexander Shishkin Cc: Jiri Olsa Link: https://lore.kernel.org/r/20210218095801.19576-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/intel-pt.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tools') 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; -- cgit v1.2.3