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Commit bd1637d6 authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Remove additional resr and rear loading 



RESR and REAR uses the same regs in whole file.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent b175bcfe

arch/microblaze/kernel/hw_exception_handler.S

+3 −15
Original line number Diff line number Diff line
@@ -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.