ARM: pm: preallocate a page table for suspend/resume

Preallocate a page table and setup an identity mapping for the MMU
enable code.  This means we don't have to "borrow" a page table to
do this, avoiding complexities with L2 cache coherency.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 755e1bf22681..efd49492fa4d 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -435,13 +435,7 @@ ENTRY(cpu_xsc3_do_resume)
         mcr     p15, 0, r7, c3, c0, 0   @ domain ID
         mcr     p15, 0, r8, c2, c0, 0   @ translation table base addr
         mcr     p15, 0, r9, c1, c0, 1   @ auxiliary control reg
-
-        @ temporarily map resume_turn_on_mmu into the page table,
-        @ otherwise prefetch abort occurs after MMU is turned on
         mov     r0, r10                 @ control register
-        mov     r2, r8, lsr #14         @ get TTB0 base
-        mov     r2, r2, lsl #14
-        ldr     r3, =0x542e             @ section flags
         b       cpu_resume_mmu
 ENDPROC(cpu_xsc3_do_resume)
 #endif