Revert "ARM64: unwind: Fix PC calculation"

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commit 9702970c7b upstream.

This reverts commit e306dfd06f.

With this patch applied, we were the only architecture making this sort
of adjustment to the PC calculation in the unwinder. This causes
problems for ftrace, where the PC values are matched against the
contents of the stack frames in the callchain and fail to match any
records after the address adjustment.

Whilst there has been some effort to change ftrace to workaround this,
those patches are not yet ready for mainline and, since we're the odd
architecture in this regard, let's just step in line with other
architectures (like arch/arm/) for now.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Will Deacon 2015-10-28 16:56:13 +00:00 • committed by Luis Henriques

parent 9b7f7de45a

commit a40f91c8cf

1 changed files with 1 additions and 5 deletions

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arch/arm64/kernel/stacktrace.c

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