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x86,64: Separate arg1 from rbp handling in SAVE_REGS_IRQ

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Just for clarity in the code. Have a first block that handles
the frame pointer and a separate one that handles pt_regs
pointer and its use.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jan Beulich <JBeulich@novell.com>
This commit is contained in:
Frederic Weisbecker 2011-07-01 02:25:17 +02:00
parent 1871853f7a
commit 3b99a3ef55
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/entry_64.S
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@ -310,9 +310,10 @@ ENDPROC(native_usergs_sysret64)
movq_cfi r10, R10-RBP
movq_cfi r11, R11-RBP
leaq -RBP(%rsp),%rdi /* arg1 for handler */
movq_cfi rbp, 0 /* push %rbp */
movq %rsp, %rbp
leaq -RBP(%rsp),%rdi /* arg1 for handler */
testl $3, CS(%rdi)
je 1f
SWAPGS