[PATCH 0/4] x86/alternatives: Do NOPs optimization on a temporary buffer

Borislav Petkov
2024-01-30T10:59:56Z

From: "Borislav Petkov (AMD)" <bp@alien8.de>

Hi,

here's a small set which sprang out from my reacting to the fact that
NOPs optimization in the alternatives code needs to happen on
a temporary buffer like the other alternative operations - not in-place
and cause all kinds of fun.

The result is this, which makes the alternatives code simpler and it is
a net win, size-wise:

1 file changed, 50 insertions(+), 72 deletions(-)

Constructive feedback is always welcome!

Thx.

Borislav Petkov (AMD) (4):
x86/alternatives: Use a temporary buffer when optimizing NOPs
x86/alternatives: Get rid of __optimize_nops()
x86/alternatives: Optimize optimize_nops()
x86/alternatives: Sort local vars in apply_alternatives()

arch/x86/kernel/alternative.c | 122 ++++++++++++++--------------------
1 file changed, 50 insertions(+), 72 deletions(-)

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2.43.0