Lets save one cycle by aligning swapper_pg_dir on 16 bits boundary.
Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
arch/powerpc/kernel/head_8xx.S | 13 +++++--------
1 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 4a49ff3..6c2aa33 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -310,7 +310,6 @@ InstructionTLBMiss:
andi. r11, r10, 0x0800 /* Address >= 0x80000000 */
beq 3f
lis r11, swapper_pg_dir@h
- ori r11, r11, swapper_pg_dir@l
rlwimi r10, r11, 0, 2, 19
3:
#endif
@@ -383,7 +382,6 @@ DataStoreTLBMiss:
andi. r11, r10, 0x0800
beq 3f
lis r11, swapper_pg_dir@h
- ori r11, r11, swapper_pg_dir@l
rlwimi r10, r11, 0, 2, 19
3:
lwz r11, 0(r10) /* Get the level 1 entry */
@@ -526,7 +524,6 @@ FixupDAR:/* Entry point for dcbx workaround. */
mfspr r11, SPRN_M_TWB /* Get level 1 table entry address */
beq- 3f /* Branch if user space */
lis r11, (swapper_pg_dir-PAGE_OFFSET)@h
- ori r11, r11, (swapper_pg_dir-PAGE_OFFSET)@l
rlwimi r11, r10, 32-20, 0xffc /* r11 = r11&~0xffc|(r10>>20)&0xffc */
3: lwz r11, 0(r11) /* Get the level 1 entry */
DO_8xx_CPU6(0x3b80, r3)
@@ -687,7 +684,6 @@ start_here:
* easier......until someone changes init's static structures.
*/
lis r6, swapper_pg_dir@h
- ori r6, r6, swapper_pg_dir@l
tophys(r6,r6)
#ifdef CONFIG_8xx_CPU6
lis r4, cpu6_errata_word@h
@@ -912,14 +908,15 @@ set_dec_cpu6:
.data
.globl sdata
sdata:
- .globl empty_zero_page
-empty_zero_page:
- .space 4096
-
.globl swapper_pg_dir
+ .align 16
swapper_pg_dir:
.space 4096
+ .globl empty_zero_page
+empty_zero_page:
+ .space 4096
+
/* Room for two PTE table poiners, usually the kernel and current user
* pointer to their respective root page table (pgdir).
*/
--
1.7.1
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