Re: [PATCH v3 01/18] perf cs-etm: Fix nVHE per-thread decoding

[sashiko-bot@kernel.org]

> pid_fmt is unset in per-thread mode because we don't need PIDs, so we
> can't use it as a hint to determine which EL the host is running at.
> That results in falling though to the next part where EL1 is treated as
> guest, which is wrong for nVHE.
> 
> Fix it by only returning a guest machine when run from perf kvm where a
> guest image would be provided, which matches existing behavior in other
> parts of Perf. The exception is when pid_fmt shows that the host is
> running at EL2 (VHE). Then EL1 is always a guest, so keep using the guest
> machine rather than decoding guest trace with the host kernel maps.
> 
> Reviewed-by: Leo Yan <leo.yan@arm.com>
> Signed-off-by: James Clark <james.clark@linaro.org>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261102-james-cs-unformatted-per-thread-fix-v3-0-dbcb0c281b9b@linaro.org?part=1