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x86/nmi/64: Minor asm simplification
Replace LEA; MOV with an equivalent SUB. This saves one instruction. Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -1420,8 +1420,7 @@ nested_nmi:
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* Modify the "iret" frame to point to repeat_nmi, forcing another
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* iteration of NMI handling.
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*/
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leaq -1*8(%rsp), %rdx
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movq %rdx, %rsp
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subq $8, %rsp
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leaq -10*8(%rsp), %rdx
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pushq $__KERNEL_DS
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pushq %rdx
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