[PATCH] [POWERPC] Clean up access to thread_info in assembly

[PATCH] [POWERPC] Clean up access to thread_info in assembly

[Kumar Gala]

Use (31-THREAD_SHIFT) to get to thread_info from stack pointer.  This makes
the code a bit easier to read and more robust if we ever change THREAD_SHIFT.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/kernel/misc_32.S |    6 +++---
 arch/powerpc/mm/hash_low_32.S |    4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 9d2c566..92ccc6f 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -152,7 +152,7 @@ _GLOBAL(low_choose_750fx_pll)
 	mtspr	SPRN_HID1,r4

 	/* Store new HID1 image */
-	rlwinm	r6,r1,0,0,18
+	rlwinm	r6,r1,0,0,(31-THREAD_SHIFT)
 	lwz	r6,TI_CPU(r6)
 	slwi	r6,r6,2
 	addis	r6,r6,nap_save_hid1@ha
@@ -281,7 +281,7 @@ _GLOBAL(_tlbia)
 #endif /* CONFIG_SMP */
 #else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
 #if defined(CONFIG_SMP)
-	rlwinm	r8,r1,0,0,18
+	rlwinm	r8,r1,0,0,(31-THREAD_SHIFT)
 	lwz	r8,TI_CPU(r8)
 	oris	r8,r8,10
 	mfmsr	r10
@@ -377,7 +377,7 @@ _GLOBAL(_tlbie)
 #endif /* CONFIG_SMP */
 #else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
 #if defined(CONFIG_SMP)
-	rlwinm	r8,r1,0,0,18
+	rlwinm	r8,r1,0,0,(31-THREAD_SHIFT)
 	lwz	r8,TI_CPU(r8)
 	oris	r8,r8,11
 	mfmsr	r10
diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S
index e10d76a..ddeaf9e 100644
--- a/arch/powerpc/mm/hash_low_32.S
+++ b/arch/powerpc/mm/hash_low_32.S
@@ -191,7 +191,7 @@ _GLOBAL(add_hash_page)
 	add	r3,r3,r0		/* note create_hpte trims to 24 bits */

 #ifdef CONFIG_SMP
-	rlwinm	r8,r1,0,0,18		/* use cpu number to make tag */
+	rlwinm	r8,r1,0,0,(31-THREAD_SHIFT) /* use cpu number to make tag */
 	lwz	r8,TI_CPU(r8)		/* to go in mmu_hash_lock */
 	oris	r8,r8,12
 #endif /* CONFIG_SMP */
@@ -526,7 +526,7 @@ _GLOBAL(flush_hash_pages)
 #ifdef CONFIG_SMP
 	addis	r9,r7,mmu_hash_lock@ha
 	addi	r9,r9,mmu_hash_lock@l
-	rlwinm	r8,r1,0,0,18
+	rlwinm	r8,r1,0,0,(31-THREAD_SHIFT)
 	add	r8,r8,r7
 	lwz	r8,TI_CPU(r8)
 	oris	r8,r8,9
-- 
1.5.4.1