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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-01-06 23:33:19 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-01-06 23:33:19 +0100
commit28cdac6690cb113856293bf79b40de33dbd8f974 (patch)
tree64cd8ca8376ccf9a12faee3588c15a5839f9a28b /arch/arm/mm/proc-macros.S
parentMerge branch 'misc' into devel (diff)
parentARM: pgtable: provide RDONLY page table bit rather than WRITE bit (diff)
downloadlinux-28cdac6690cb113856293bf79b40de33dbd8f974.tar.xz
linux-28cdac6690cb113856293bf79b40de33dbd8f974.zip
Merge branch 'pgt' (early part) into devel
Diffstat (limited to 'arch/arm/mm/proc-macros.S')
-rw-r--r--arch/arm/mm/proc-macros.S30
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index f8f777df8d72..e32fa499194c 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -91,7 +91,7 @@
#if L_PTE_SHARED != PTE_EXT_SHARED
#error PTE shared bit mismatch
#endif
-#if (L_PTE_EXEC+L_PTE_USER+L_PTE_WRITE+L_PTE_DIRTY+L_PTE_YOUNG+\
+#if (L_PTE_XN+L_PTE_USER+L_PTE_RDONLY+L_PTE_DIRTY+L_PTE_YOUNG+\
L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED
#error Invalid Linux PTE bit settings
#endif
@@ -135,7 +135,7 @@
.endm
.macro armv6_set_pte_ext pfx
- str r1, [r0], #-2048 @ linux version
+ str r1, [r0], #2048 @ linux version
bic r3, r1, #0x000003fc
bic r3, r3, #PTE_TYPE_MASK
@@ -146,9 +146,9 @@
and r2, r1, #L_PTE_MT_MASK
ldr r2, [ip, r2]
- tst r1, #L_PTE_WRITE
- tstne r1, #L_PTE_DIRTY
- orreq r3, r3, #PTE_EXT_APX
+ eor r1, r1, #L_PTE_DIRTY
+ tst r1, #L_PTE_DIRTY|L_PTE_RDONLY
+ orrne r3, r3, #PTE_EXT_APX
tst r1, #L_PTE_USER
orrne r3, r3, #PTE_EXT_AP1
@@ -158,8 +158,8 @@
bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
#endif
- tst r1, #L_PTE_EXEC
- orreq r3, r3, #PTE_EXT_XN
+ tst r1, #L_PTE_XN
+ orrne r3, r3, #PTE_EXT_XN
orr r3, r3, r2
@@ -187,9 +187,9 @@
* 1111 0xff r/w r/w
*/
.macro armv3_set_pte_ext wc_disable=1
- str r1, [r0], #-2048 @ linux version
+ str r1, [r0], #2048 @ linux version
- eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
+ eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY
bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits
bic r2, r2, #PTE_TYPE_MASK
@@ -198,7 +198,7 @@
tst r3, #L_PTE_USER @ user?
orrne r2, r2, #PTE_SMALL_AP_URO_SRW
- tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty?
+ tst r3, #L_PTE_RDONLY | L_PTE_DIRTY @ write and dirty?
orreq r2, r2, #PTE_SMALL_AP_UNO_SRW
tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young?
@@ -210,7 +210,7 @@
bicne r2, r2, #PTE_BUFFERABLE
#endif
.endif
- str r2, [r0] @ hardware version
+ str r2, [r0] @ hardware version
.endm
@@ -230,9 +230,9 @@
* 1111 11 r/w r/w
*/
.macro xscale_set_pte_ext_prologue
- str r1, [r0], #-2048 @ linux version
+ str r1, [r0] @ linux version
- eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
+ eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY
bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits
orr r2, r2, #PTE_TYPE_EXT @ extended page
@@ -240,7 +240,7 @@
tst r3, #L_PTE_USER @ user?
orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w
- tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty?
+ tst r3, #L_PTE_RDONLY | L_PTE_DIRTY @ write and dirty?
orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w
@ combined with user -> user r/w
.endm
@@ -249,7 +249,7 @@
tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young?
movne r2, #0 @ no -> fault
- str r2, [r0] @ hardware version
+ str r2, [r0, #2048]! @ hardware version
mov ip, #0
mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line
mcr p15, 0, ip, c7, c10, 4 @ data write barrier