Merge remote-tracking branch 'lsk/v3.10/topic/gator' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / arch / arm / mm / proc-macros.S

diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index e3c48a3fe0638177f980ead520a2190f089128f2..ee1d80593958715340ce2743b3d0b2370c227848 100644 (file)
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -112,13 +112,9 @@
  *  100x   1   0   1   r/o     no acc
  *  10x0   1   0   1   r/o     no acc
  *  1011   0   0   1   r/w     no acc
- *  110x   0   1   0   r/w     r/o
- *  11x0   0   1   0   r/w     r/o
- *  1111   0   1   1   r/w     r/w
- *
- * If !CONFIG_CPU_USE_DOMAINS, the following permissions are changed:
  *  110x   1   1   1   r/o     r/o
  *  11x0   1   1   1   r/o     r/o
+ *  1111   0   1   1   r/w     r/w
  */
        .macro  armv6_mt_table pfx
 \pfx\()_mt_table:
@@ -137,7 +133,7 @@
        .long   PTE_EXT_TEX(2)                                  @ L_PTE_MT_DEV_NONSHARED
        .long   0x00                                            @ unused
        .long   0x00                                            @ unused
-       .long   0x00                                            @ unused
+       .long   PTE_CACHEABLE | PTE_BUFFERABLE | PTE_EXT_APX    @ L_PTE_MT_VECTORS
        .endm
 
        .macro  armv6_set_pte_ext pfx
@@ -158,24 +154,21 @@
 
        tst     r1, #L_PTE_USER
        orrne   r3, r3, #PTE_EXT_AP1
-#ifdef CONFIG_CPU_USE_DOMAINS
-       @ allow kernel read/write access to read-only user pages
        tstne   r3, #PTE_EXT_APX
-       bicne   r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
-#endif
+
+       @ user read-only -> kernel read-only
+       bicne   r3, r3, #PTE_EXT_AP0
 
        tst     r1, #L_PTE_XN
        orrne   r3, r3, #PTE_EXT_XN
 
-       orr     r3, r3, r2
+       eor     r3, r3, r2
 
        tst     r1, #L_PTE_YOUNG
        tstne   r1, #L_PTE_PRESENT
        moveq   r3, #0
-#ifndef CONFIG_CPU_USE_DOMAINS
        tstne   r1, #L_PTE_NONE
        movne   r3, #0
-#endif
 
        str     r3, [r0]
        mcr     p15, 0, r0, c7, c10, 1          @ flush_pte