Ravi Bangoria 779d41c80b perf/amd/ibs: Use interrupt regs ip for stack unwinding ... [ Upstream commit 3d47083b9ff46863e8374ad3bb5edb5e464c75f8 ] IbsOpRip is recorded when IBS interrupt is triggered. But there is a skid from the time IBS interrupt gets triggered to the time the interrupt is presented to the core. Meanwhile processor would have moved ahead and thus IbsOpRip will be inconsistent with rsp and rbp recorded as part of the interrupt regs. This causes issues while unwinding stack using the ORC unwinder as it needs consistent rip, rsp and rbp. Fix this by using rip from interrupt regs instead of IbsOpRip for stack unwinding. Fixes: ee9f8fce99 ("x86/unwind: Add the ORC unwinder") Reported-by: Dmitry Monakhov <dmtrmonakhov@yandex-team.ru> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20220429051441.14251-1-ravi.bangoria@amd.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-06-09 10:21:07 +02:00
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amd	perf/amd/ibs: Use interrupt regs ip for stack unwinding	2022-06-09 10:21:07 +02:00
intel	perf/x86/intel: Fix event constraints for ICL	2022-06-09 10:20:49 +02:00
zhaoxin	x86/perf: Fix a typo	2020-07-22 10:22:08 +02:00
core.c	perf: Protect perf_guest_cbs with RCU	2022-01-20 09:17:50 +01:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	perf/x86/rapl: Fix RAPL config variable bug	2020-06-02 11:52:56 +02:00
msr.c	perf/x86/msr: Add Sapphire Rapids CPU support	2021-10-27 09:56:55 +02:00
perf_event.h	perf/x86/amd: Don't touch the AMD64_EVENTSEL_HOSTONLY bit inside the guest	2021-08-12 13:22:19 +02:00
probe.c	perf/x86/rapl: Make perf_probe_msr() more robust and flexible	2020-05-28 07:58:55 +02:00
probe.h	perf/x86: Add MSR probe interface	2019-06-24 19:28:31 +02:00
rapl.c	perf/x86: fix sysfs type mismatches	2020-11-17 13:15:38 +01:00