[RFC][PATCH v2 0/7] objtool x86 decoder fixes

[Peter Zijlstra]

Hi,

Since I had to look at instruction decoding for the stack swizzle thing, I
ended up with a few more changes to the objtool x86 decoder.

These patches are lightly tested (they build defconfig and allmodconfig using
GCC10), but older versions have seen some robot exposure and other compilers.

v2:
 - actually Cc'ed LKML :/