[PATCH 0/5] objtool: The stack swizzle again

[Peter Zijlstra]

Hi

The stack swizzle is current again, these patches implement objtool support for
the native x86_64 stack swizzle pattern.

It allows Thomas to use his preferred minimal stack swizzle without (much)
limitations.

We used to use SP_INDIRECT with hints back before the entry code rewrite, the
current code relies on asm with a frame-pointer setup, but that all needs to
change again.

Avoid the hint abuse and detect the pattern directly.