RE: [PATCH 1/2] x86: profiling: remove lock functions hack for !FRAME_POINTER

[David Laight]

From: Chen Zhongjin
> Sent: 12 April 2023 08:02
...
> > 4. !CONFIG_FRAME_POINTER is probably even more rare today than it was in
> >     2006
>
> No. !CONFIG_FRAME_POINTER is more common today because of UNWINDER_ORC.
> And that is why the bug is triggered more frequently.

CONFIG_FRAME_POINTER is pretty much required (on x86-64)
for the user copy checks that are enabled in distro kernels.

	David

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