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Date: Sun, 19 Feb 2012 16:07:52 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org Cc: mingo@...nel.org, tglx@...utronix.de, hpa@...or.com, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, hjl.tools@...il.com Subject: [PATCH 14/30] x86-64: Add prototype for old_rsp to a header file From: "H. J. Lu" <hjl.tools@...il.com> So far this has only been used in process_64.c, but the x32 code will need it in additional code. Signed-off-by: H. Peter Anvin <hpa@...or.com> --- arch/x86/include/asm/processor.h | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 9f748b5..e34f951 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -948,6 +948,12 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); #define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1) extern unsigned long KSTK_ESP(struct task_struct *task); + +/* + * User space RSP while inside the SYSCALL fast path + */ +DECLARE_PER_CPU(unsigned long, old_rsp); + #endif /* CONFIG_X86_64 */ extern void start_thread(struct pt_regs *regs, unsigned long new_ip, -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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