From 94673e968cbcce07fa78dac4b0ae05d24b5816e1 Mon Sep 17 00:00:00 2001
From: David Miller <davem@davemloft.net>
Date: Thu, 28 Jan 2010 21:42:02 -0800
Subject: [PATCH] sparc: TIF_ABI_PENDING bit removal

Here are the sparc bits to remove TIF_ABI_PENDING now that
set_personality() is called at the appropriate place in exec.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/sparc/include/asm/elf_64.h         | 13 +++----------
 arch/sparc/include/asm/thread_info_64.h |  4 +---
 arch/sparc/kernel/process_64.c          |  8 --------
 3 files changed, 4 insertions(+), 21 deletions(-)

diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h
index ff66bb88537b..e67880381b84 100644
--- a/arch/sparc/include/asm/elf_64.h
+++ b/arch/sparc/include/asm/elf_64.h
@@ -195,17 +195,10 @@ static inline unsigned int sparc64_elf_hwcap(void)
 #define ELF_PLATFORM	(NULL)
 
 #define SET_PERSONALITY(ex)				\
-do {	unsigned long new_flags = current_thread_info()->flags; \
-	new_flags &= _TIF_32BIT;			\
-	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
-		new_flags |= _TIF_32BIT;		\
+do {	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
+		set_thread_flag(TIF_32BIT);		\
 	else						\
-		new_flags &= ~_TIF_32BIT;		\
-	if ((current_thread_info()->flags & _TIF_32BIT) \
-	    != new_flags)				\
-		set_thread_flag(TIF_ABI_PENDING);	\
-	else						\
-		clear_thread_flag(TIF_ABI_PENDING);	\
+		clear_thread_flag(TIF_32BIT);		\
 	/* flush_thread will update pgd cache */	\
 	if (personality(current->personality) != PER_LINUX32)	\
 		set_personality(PER_LINUX |		\
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index 7257ebb8f394..39be9f256e5a 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -228,12 +228,11 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define TIF_SECCOMP		9	/* secure computing */
 #define TIF_SYSCALL_AUDIT	10	/* syscall auditing active */
 #define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
-/* flag bit 11 is available */
 /* NOTE: Thread flags >= 12 should be ones we have no interest
  *       in using in assembly, else we can't use the mask as
  *       an immediate value in instructions such as andcc.
  */
-#define TIF_ABI_PENDING		12
+/* flag bit 12 is available */
 #define TIF_MEMDIE		13
 #define TIF_POLLING_NRFLAG	14
 #define TIF_FREEZE		15	/* is freezing for suspend */
@@ -248,7 +247,6 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define _TIF_SECCOMP		(1<<TIF_SECCOMP)
 #define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
-#define _TIF_ABI_PENDING	(1<<TIF_ABI_PENDING)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 #define _TIF_FREEZE		(1<<TIF_FREEZE)
 
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 18d67854a1b8..c3f1cce0e95e 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -365,14 +365,6 @@ void flush_thread(void)
 	struct thread_info *t = current_thread_info();
 	struct mm_struct *mm;
 
-	if (test_ti_thread_flag(t, TIF_ABI_PENDING)) {
-		clear_ti_thread_flag(t, TIF_ABI_PENDING);
-		if (test_ti_thread_flag(t, TIF_32BIT))
-			clear_ti_thread_flag(t, TIF_32BIT);
-		else
-			set_ti_thread_flag(t, TIF_32BIT);
-	}
-
 	mm = t->task->mm;
 	if (mm)
 		tsb_context_switch(mm);
-- 
2.20.1