Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8a13c4f972e6c107d8cff54de647544c00e25b41
Commit: 8a13c4f972e6c107d8cff54de647544c00e25b41
Parent: f5d7d13cd96313a90f8d13fa5d6e0704f6d534ba
Author: Kumar Gala <[EMAIL PROTECTED]>
AuthorDate: Thu Oct 11 13:36:52 2007 -0500
Committer: Kumar Gala <[EMAIL PROTECTED]>
CommitDate: Thu Oct 11 13:36:52 2007 -0500
[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB
handlers
Move to using PAGE_OFFSET instead of TASK_SIZE or KERNELBASE value on
6xx/40x/44x/fsl-booke to determine if the faulting address is a kernel or
user space address. This mimics how the macro is_kernel_addr() works.
Signed-off-by: Kumar Gala <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/head_32.S | 18 +++++++++---------
arch/powerpc/kernel/head_40x.S | 6 +++---
arch/powerpc/kernel/head_44x.S | 6 +++---
arch/powerpc/kernel/head_fsl_booke.S | 11 ++++-------
4 files changed, 19 insertions(+), 22 deletions(-)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index d83f04e..a5b13ae 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -469,12 +469,12 @@ InstructionTLBMiss:
mfctr r0
/* Get PTE (linux-style) and check access */
mfspr r3,SPRN_IMISS
- lis r1,[EMAIL PROTECTED] /* check if kernel address */
- cmplw 0,r3,r1
+ lis r1,[EMAIL PROTECTED] /* check if kernel address */
+ cmplw 0,r1,r3
mfspr r2,SPRN_SPRG3
li r1,_PAGE_USER|_PAGE_PRESENT /* low addresses tested as user */
lwz r2,PGDIR(r2)
- blt+ 112f
+ 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,[EMAIL PROTECTED] /* if kernel address, use */
@@ -543,12 +543,12 @@ DataLoadTLBMiss:
mfctr r0
/* Get PTE (linux-style) and check access */
mfspr r3,SPRN_DMISS
- lis r1,[EMAIL PROTECTED] /* check if kernel address */
- cmplw 0,r3,r1
+ lis r1,[EMAIL PROTECTED] /* check if kernel address */
+ cmplw 0,r1,r3
mfspr r2,SPRN_SPRG3
li r1,_PAGE_USER|_PAGE_PRESENT /* low addresses tested as user */
lwz r2,PGDIR(r2)
- blt+ 112f
+ 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,[EMAIL PROTECTED] /* if kernel address, use */
@@ -615,12 +615,12 @@ DataStoreTLBMiss:
mfctr r0
/* Get PTE (linux-style) and check access */
mfspr r3,SPRN_DMISS
- lis r1,[EMAIL PROTECTED] /* check if kernel address */
- cmplw 0,r3,r1
+ lis r1,[EMAIL PROTECTED] /* check if kernel address */
+ cmplw 0,r1,r3
mfspr r2,SPRN_SPRG3
li r1,_PAGE_RW|_PAGE_USER|_PAGE_PRESENT /* access flags */
lwz r2,PGDIR(r2)
- blt+ 112f
+ 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,[EMAIL PROTECTED] /* if kernel address, use */
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index e312824..cfefc2d 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -289,7 +289,7 @@ label:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
@@ -481,7 +481,7 @@ label:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
@@ -581,7 +581,7 @@ label:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 864d63f..409db61 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -319,7 +319,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
@@ -458,7 +458,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
@@ -528,7 +528,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw r10, r11
blt+ 3f
lis r11, [EMAIL PROTECTED]
diff --git a/arch/powerpc/kernel/head_fsl_booke.S
b/arch/powerpc/kernel/head_fsl_booke.S
index ee33ddd..4b98227 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -461,8 +461,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
- ori r11, r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw 0, r10, r11
bge 2f
@@ -584,8 +583,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
- ori r11, r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw 5, r10, r11
blt 5, 3f
lis r11, [EMAIL PROTECTED]
@@ -645,8 +643,7 @@ interrupt_base:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- lis r11, [EMAIL PROTECTED]
- ori r11, r11, [EMAIL PROTECTED]
+ lis r11, [EMAIL PROTECTED]
cmplw 5, r10, r11
blt 5, 3f
lis r11, [EMAIL PROTECTED]
@@ -744,7 +741,7 @@ data_access:
* r10 - EA of fault
* r11 - TLB (info from Linux PTE)
* r12, r13 - available to use
- * CR5 - results of addr < TASK_SIZE
+ * CR5 - results of addr >= PAGE_OFFSET
* MAS0, MAS1 - loaded with proper value when we get here
* MAS2, MAS3 - will need additional info from Linux PTE
* Upon exit, we reload everything and RFI.
-
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