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authorMichal Simek <monstr@monstr.eu>2010-03-19 12:50:35 +0100
committerMichal Simek <monstr@monstr.eu>2010-04-01 08:38:23 +0200
commitbd1637d63e82aaf732ffbe907ba887fa12e82df4 (patch)
treee81024ed210d7c604a20ce6b32f6c72701a2dc73 /arch/microblaze
parentb175bcfe31cba846d8bfa35a3a4820667f7af383 (diff)
downloadop-kernel-dev-bd1637d63e82aaf732ffbe907ba887fa12e82df4.zip
op-kernel-dev-bd1637d63e82aaf732ffbe907ba887fa12e82df4.tar.gz
microblaze: Remove additional resr and rear loading
RESR and REAR uses the same regs in whole file. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/kernel/hw_exception_handler.S18
1 files changed, 3 insertions, 15 deletions
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
index a652add..5d8c3de 100644
--- a/arch/microblaze/kernel/hw_exception_handler.S
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -562,20 +562,16 @@ ex_handler_done:
*/
mfs r11, rpid
nop
- mfs r3, rear /* Get faulting address */
- nop
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
- ori r4, r0, CONFIG_KERNEL_START
- cmpu r4, r3, r4
- bgti r4, ex3
+ ori r5, r0, CONFIG_KERNEL_START
+ cmpu r5, r3, r5
+ bgti r5, ex3
/* First, check if it was a zone fault (which means a user
* tried to access a kernel or read-protected page - always
* a SEGV). All other faults here must be stores, so no
* need to check ESR_S as well. */
- mfs r4, resr
- nop
andi r4, r4, 0x800 /* ESR_Z - zone protection */
bnei r4, ex2
@@ -590,8 +586,6 @@ ex_handler_done:
* tried to access a kernel or read-protected page - always
* a SEGV). All other faults here must be stores, so no
* need to check ESR_S as well. */
- mfs r4, resr
- nop
andi r4, r4, 0x800 /* ESR_Z */
bnei r4, ex2
/* get current task address */
@@ -666,8 +660,6 @@ ex_handler_done:
* R3 = ESR
*/
- mfs r3, rear /* Get faulting address */
- nop
RESTORE_STATE;
bri page_fault_instr_trap
@@ -682,8 +674,6 @@ ex_handler_done:
*/
mfs r11, rpid
nop
- mfs r3, rear /* Get faulting address */
- nop
/* If we are faulting a kernel address, we have to use the
* kernel page tables. */
@@ -754,8 +744,6 @@ ex_handler_done:
*/
mfs r11, rpid
nop
- mfs r3, rear /* Get faulting address */
- nop
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
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