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>
This commit is contained in:
parent
810bc075f7
commit
23a781e987
|
@ -1420,8 +1420,7 @@ nested_nmi:
|
||||||
* Modify the "iret" frame to point to repeat_nmi, forcing another
|
* Modify the "iret" frame to point to repeat_nmi, forcing another
|
||||||
* iteration of NMI handling.
|
* iteration of NMI handling.
|
||||||
*/
|
*/
|
||||||
leaq -1*8(%rsp), %rdx
|
subq $8, %rsp
|
||||||
movq %rdx, %rsp
|
|
||||||
leaq -10*8(%rsp), %rdx
|
leaq -10*8(%rsp), %rdx
|
||||||
pushq $__KERNEL_DS
|
pushq $__KERNEL_DS
|
||||||
pushq %rdx
|
pushq %rdx
|
||||||
|
|
Loading…
Reference in New Issue