Commit 2497f0a8 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 235b185c

arch/arm/mm/mmu.c

+12 −4
Original line number Diff line number Diff line
@@ -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

CRA Git | Maintained and supported by SUSTech CRA and CCSE