Commit 65faca5c authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
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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: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarAndi 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 6e86bfdc

tools/perf/util/intel-pt.c

+7 −1
Original line number Diff line number Diff line
@@ -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;