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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-04-21 09:59:44 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-04-21 20:35:44 +0100 |
| commit | 2497f0a8125e307cf1fd4222bab53f66305eba27 (patch) | |
| tree | 44973e86c9b5c4f471586acf0207ab13ccb1f6d8 | |
| parent | 235b185ce47ce64793362bd3ae4bcd8afc6b57b8 (diff) | |
| download | linux-2497f0a8125e307cf1fd4222bab53f66305eba27.tar.bz2 | |
[ARM] mm 1: Combine mem_type domain into prot_* at init time
Rather than combining the domain for a particular memory type with
the protection information each time we want to use it, do so when
we fix up the mem_type array at initialisation time.
Rename struct mem_types to be mem_type - each structure is one
memory type description, not several.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mm/mmu.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 94fd4bf5cb9e..6178be0242f2 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -176,14 +176,14 @@ void adjust_cr(unsigned long mask, unsigned long set) } #endif -struct mem_types { +struct mem_type { unsigned int prot_pte; unsigned int prot_l1; unsigned int prot_sect; unsigned int domain; }; -static struct mem_types mem_types[] __initdata = { +static struct mem_type mem_types[] __initdata = { [MT_DEVICE] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | L_PTE_WRITE, @@ -368,6 +368,14 @@ static void __init build_mem_type_table(void) } printk("Memory policy: ECC %sabled, Data cache %s\n", ecc_mask ? "en" : "dis", cp->policy); + + for (i = 0; i < ARRAY_SIZE(mem_types); i++) { + struct mem_type *t = &mem_types[i]; + if (t->prot_l1) + t->prot_l1 |= PMD_DOMAIN(t->domain); + if (t->prot_sect) + t->prot_sect |= PMD_DOMAIN(t->domain); + } } #define vectors_base() (vectors_high() ? 0xffff0000 : 0) @@ -458,8 +466,8 @@ void __init create_mapping(struct map_desc *md) domain = mem_types[md->type].domain; prot_pte = __pgprot(mem_types[md->type].prot_pte); - prot_l1 = mem_types[md->type].prot_l1 | PMD_DOMAIN(domain); - prot_sect = mem_types[md->type].prot_sect | PMD_DOMAIN(domain); + prot_l1 = mem_types[md->type].prot_l1; + prot_sect = mem_types[md->type].prot_sect; /* * Catch 36-bit addresses |