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authorChristophe Leroy <christophe.leroy@c-s.fr>2019-02-21 10:37:56 +0000
committerMichael Ellerman <mpe@ellerman.id.au>2019-02-22 00:10:16 +1100
commit2c12393f577396a51b7e0537bd3eb29dcc26dc1b (patch)
tree165fddb0dcd2028de8c6b6ce557195adc591fb60
parent93c4a162b014d238a287f8264adb25c009c79e61 (diff)
powerpc/603: use physical address directly in TLB miss handlers.
Since commit c62ce9ef97ba ("powerpc: remove remaining bits from CONFIG_APUS"), tophys() has become a pure constant operation. PAGE_OFFSET is known at compile time so the physical address can be builtin directly. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r--arch/powerpc/kernel/head_32.S15
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 2b0a26f66115..4c2cc42399aa 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -505,9 +505,8 @@ InstructionTLBMiss:
bge- 112f
mfspr r2,SPRN_SRR1 /* and MSR_PR bit from SRR1 */
rlwimi r1,r2,32-12,29,29 /* shift MSR_PR to _PAGE_USER posn */
- lis r2,swapper_pg_dir@ha /* if kernel address, use */
- addi r2,r2,swapper_pg_dir@l /* kernel page table */
- tophys(r2,r2)
+ lis r2, (swapper_pg_dir - PAGE_OFFSET)@ha /* if kernel address, use */
+ addi r2, r2, (swapper_pg_dir - PAGE_OFFSET)@l /* kernel page table */
112: rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
rlwinm. r2,r2,0,0,19 /* extract address of pte page */
@@ -578,9 +577,8 @@ DataLoadTLBMiss:
bge- 112f
mfspr r2,SPRN_SRR1 /* and MSR_PR bit from SRR1 */
rlwimi r1,r2,32-12,29,29 /* shift MSR_PR to _PAGE_USER posn */
- lis r2,swapper_pg_dir@ha /* if kernel address, use */
- addi r2,r2,swapper_pg_dir@l /* kernel page table */
- tophys(r2,r2)
+ lis r2, (swapper_pg_dir - PAGE_OFFSET)@ha /* if kernel address, use */
+ addi r2, r2, (swapper_pg_dir - PAGE_OFFSET)@l /* kernel page table */
112: rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
rlwinm. r2,r2,0,0,19 /* extract address of pte page */
@@ -661,9 +659,8 @@ DataStoreTLBMiss:
bge- 112f
mfspr r2,SPRN_SRR1 /* and MSR_PR bit from SRR1 */
rlwimi r1,r2,32-12,29,29 /* shift MSR_PR to _PAGE_USER posn */
- lis r2,swapper_pg_dir@ha /* if kernel address, use */
- addi r2,r2,swapper_pg_dir@l /* kernel page table */
- tophys(r2,r2)
+ lis r2, (swapper_pg_dir - PAGE_OFFSET)@ha /* if kernel address, use */
+ addi r2, r2, (swapper_pg_dir - PAGE_OFFSET)@l /* kernel page table */
112: rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
rlwinm. r2,r2,0,0,19 /* extract address of pte page */