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Subject[PATCH v2 01/20] ARM: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_*
Date
PGDIR_SHIFT and PMD_SHIFT for the classic 2-level page table format have
the same value (21). This patch converts the PGDIR_* uses in the kernel
to the PMD_* equivalent.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm/kernel/module.c | 2 +-
arch/arm/kernel/smp.c | 4 ++--
arch/arm/mm/dma-mapping.c | 6 +++---
arch/arm/mm/mmu.c | 16 ++++++++--------
4 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index d9bd786..6b30f01 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -32,7 +32,7 @@
* recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
*/
#undef MODULES_VADDR
-#define MODULES_VADDR (((unsigned long)_etext + ~PGDIR_MASK) & PGDIR_MASK)
+#define MODULES_VADDR (((unsigned long)_etext + ~PMD_MASK) & PMD_MASK)
#endif

#ifdef CONFIG_MMU
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 8c19595..40b386c 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -78,7 +78,7 @@ static inline void identity_mapping_add(pgd_t *pgd, unsigned long start,
if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale())
prot |= PMD_BIT4;

- for (addr = start & PGDIR_MASK; addr < end;) {
+ for (addr = start & PMD_MASK; addr < end;) {
pmd = pmd_offset(pgd + pgd_index(addr), addr);
pmd[0] = __pmd(addr | prot);
addr += SECTION_SIZE;
@@ -95,7 +95,7 @@ static inline void identity_mapping_del(pgd_t *pgd, unsigned long start,
unsigned long addr;
pmd_t *pmd;

- for (addr = start & PGDIR_MASK; addr < end; addr += PGDIR_SIZE) {
+ for (addr = start & PMD_MASK; addr < end; addr += PMD_SIZE) {
pmd = pmd_offset(pgd + pgd_index(addr), addr);
pmd[0] = __pmd(0);
pmd[1] = __pmd(0);
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index e4dd064..2aab1b4 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -120,8 +120,8 @@ static void __dma_free_buffer(struct page *page, size_t size)
#endif

#define CONSISTENT_OFFSET(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
-#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
-#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
+#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PMD_SHIFT)
+#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PMD_SHIFT)

/*
* These are the page tables (2MB each) covering uncached, DMA consistent allocations
@@ -171,7 +171,7 @@ static int __init consistent_init(void)
}

consistent_pte[i++] = pte;
- base += (1 << PGDIR_SHIFT);
+ base += (1 << PMD_SHIFT);
} while (base < CONSISTENT_END);

return ret;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 79c01f5..5e3adca 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -858,14 +858,14 @@ static inline void prepare_page_table(void)
/*
* Clear out all the mappings below the kernel image.
*/
- for (addr = 0; addr < MODULES_VADDR; addr += PGDIR_SIZE)
+ for (addr = 0; addr < MODULES_VADDR; addr += PMD_SIZE)
pmd_clear(pmd_off_k(addr));

#ifdef CONFIG_XIP_KERNEL
/* The XIP kernel is mapped in the module area -- skip over it */
- addr = ((unsigned long)_etext + PGDIR_SIZE - 1) & PGDIR_MASK;
+ addr = ((unsigned long)_etext + PMD_SIZE - 1) & PMD_MASK;
#endif
- for ( ; addr < PAGE_OFFSET; addr += PGDIR_SIZE)
+ for ( ; addr < PAGE_OFFSET; addr += PMD_SIZE)
pmd_clear(pmd_off_k(addr));

/*
@@ -880,7 +880,7 @@ static inline void prepare_page_table(void)
* memory bank, up to the end of the vmalloc region.
*/
for (addr = __phys_to_virt(end);
- addr < VMALLOC_END; addr += PGDIR_SIZE)
+ addr < VMALLOC_END; addr += PMD_SIZE)
pmd_clear(pmd_off_k(addr));
}

@@ -921,7 +921,7 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
*/
vectors_page = early_alloc(PAGE_SIZE);

- for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
+ for (addr = VMALLOC_END; addr; addr += PMD_SIZE)
pmd_clear(pmd_off_k(addr));

/*
@@ -1068,12 +1068,12 @@ void setup_mm_for_reboot(char mode)
base_pmdval |= PMD_BIT4;

for (i = 0; i < FIRST_USER_PGD_NR + USER_PTRS_PER_PGD; i++, pgd++) {
- unsigned long pmdval = (i << PGDIR_SHIFT) | base_pmdval;
+ unsigned long pmdval = (i << PMD_SHIFT) | base_pmdval;
pmd_t *pmd;

- pmd = pmd_off(pgd, i << PGDIR_SHIFT);
+ pmd = pmd_off(pgd, i << PMD_SHIFT);
pmd[0] = __pmd(pmdval);
- pmd[1] = __pmd(pmdval + (1 << (PGDIR_SHIFT - 1)));
+ pmd[1] = __pmd(pmdval + (1 << (PMD_SHIFT - 1)));
flush_pmd_entry(pmd);
}


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