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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2011-07-01 02:25:17 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2011-07-02 18:05:46 +0200 |
| commit | 3b99a3ef55b292180473a221f3d6bc24455f0632 (patch) | |
| tree | e00651ee9e8d13cbe6845ba20c47e1d04da7dae9 /arch/x86/kernel/entry_64.S | |
| parent | 1871853f7abc3c727c4346539c5062cbeaf016a4 (diff) | |
| download | lwn-3b99a3ef55b292180473a221f3d6bc24455f0632.tar.gz lwn-3b99a3ef55b292180473a221f3d6bc24455f0632.zip | |
x86,64: Separate arg1 from rbp handling in SAVE_REGS_IRQ
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>
Diffstat (limited to 'arch/x86/kernel/entry_64.S')
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index b6b2e85454cf..20dc8e6b6d80 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -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 |