linux-kernel - [PATCH] ia64: Fix me add register r8

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Date:	Fri, 18 Jul 2014 01:25:02 -0400
From:	Nicholas Krause <xerofoify@...il.com>
To:	tony.luck@...el.com
Cc:	fenghua.yu@...el.com, linux-ia64@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ia64: Fix me add register r8

The function user_stack_pointer was not returning the correct value \
as stated by a Fix Me message before the function declaration. I
fixed the return value to add register r8 as that register stores
dirty pages.

Signed-off-by: Nicholas Krause <xerofoify@...il.com>
---
 arch/ia64/include/asm/ptrace.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
index 8451439..eaef692 100644
--- a/arch/ia64/include/asm/ptrace.h
+++ b/arch/ia64/include/asm/ptrace.h
@@ -53,8 +53,7 @@
 
 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
 {
-	/* FIXME: should this be bspstore + nr_dirty regs? */
-	return regs->ar_bspstore;
+	return regs->ar_bspstore + regs->r8;
 }
 
 static inline int is_syscall_success(struct pt_regs *regs)
-- 
1.9.1

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