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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-11-16 03:16:01 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-22 14:05:32 +0300 |
| commit | d30e45eeabefadc6039d7f876a59e5f5f6cb11c6 (patch) | |
| tree | 9873141aac1042fe8b230aa525599135f5411e36 /arch/arm/mm/proc-macros.S | |
| parent | f6e3354d02aa1f30672e3671098c12cb49c7da25 (diff) | |
| download | linux-d30e45eeabefadc6039d7f876a59e5f5f6cb11c6.tar.xz | |
ARM: pgtable: switch order of Linux vs hardware page tables
This switches the ordering of the Linux vs hardware page tables in
each page, thereby eliminating some of the arithmetic in the page
table walks. As we now place the Linux page table at the beginning
of the page, we can deal with the offset in the pgt by simply masking
it away, along with the other control bits.
This also makes the arithmetic all be positive, rather than a mixture.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/proc-macros.S')
| -rw-r--r-- | arch/arm/mm/proc-macros.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index 7d63beaf9745..cbedf9c46b9d 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -121,7 +121,7 @@ .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 @@ -170,7 +170,7 @@ * 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 @@ -193,7 +193,7 @@ bicne r2, r2, #PTE_BUFFERABLE #endif .endif - str r2, [r0] @ hardware version + str r2, [r0] @ hardware version .endm @@ -213,7 +213,7 @@ * 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 @@ -232,7 +232,7 @@ 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 |