x86/alternative: Complicate optimize_nops() some more
Because: SMP alternatives: ffffffff810026dc: [2:44) optimized NOPs: eb 2a eb 28 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc is quite daft, make things more complicated and have the NOP runlength detection eat the preceding JMP if they both end at the same target. SMP alternatives: ffffffff810026dc: [0:44) optimized NOPs: eb 2a cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc Signed-off-by:Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230208171431.433132442@infradead.org
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6c480f22
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