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ARM:Rename ARM_BIG_PAGE to ARM_SECTION.

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The natural term to use when talking about MINIX big pages on ARM
is SECTION. A section is a level 1 page table entry pointing to
a 1MB area.

Change-Id: I9bd27ca99bc772126c31c27a537b1415db20c4a6
This commit is contained in:
Kees Jongenburger 2013-04-29 11:42:26 +02:00
parent 236a320240
commit e6bac75a8b
4 changed files with 11 additions and 13 deletions
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2
include/arch/earm/include/vm.h
View file

@ -6,7 +6,6 @@ arm/vm.h
#define ARM_PAGE_SIZE 4096 /* small page on ARM */
#define ARM_SECTION_SIZE (1024 * 1024) /* 1 MB section */
#define ARM_BIG_PAGE_SIZE (ARM_SECTION_SIZE)
/* Page table specific flags. */
#define ARM_VM_PAGETABLE (1 << 1) /* Page table */
@ -47,7 +46,6 @@ arm/vm.h
#define ARM_VM_SECTION_WT ((0x6 << 12) | ARM_VM_SECTION_CACHEABLE)
/* shareable device */
#define ARM_VM_SECTION_DEVICE (ARM_VM_SECTION_BUFFERABLE)
#define ARM_VM_BIGPAGE (ARM_VM_SECTION) /* 1MB section */
/* Page directory specific flags. */
#define ARM_VM_PAGEDIR (1 << 0) /* Page directory */

6
kernel/arch/earm/memory.c
View file

@ -123,10 +123,10 @@ static phys_bytes createpde(
* if that is less than the requested range.
*/
offset = linaddr & ARM_VM_OFFSET_MASK_1MB; /* Offset in 1MB window. */
*bytes = MIN(*bytes, ARM_BIG_PAGE_SIZE - offset);
*bytes = MIN(*bytes, ARM_SECTION_SIZE - offset);
/* Return the linear address of the start of the new mapping. */
return ARM_BIG_PAGE_SIZE*pde + offset;
return ARM_SECTION_SIZE*pde + offset;
}
@ -315,7 +315,7 @@ int vm_lookup(const struct proc *proc, const vir_bytes virtual,
/* We don't expect to ever see this.
* LSC Impossible with the previous test.
if(pde_v & ARM_VM_BIGPAGE) {
if(pde_v & ARM_VM_SECTION) {
*physical = pde_v & ARM_VM_SECTION_MASK;
if(ptent) *ptent = pde_v;
*physical += virtual & ARM_VM_OFFSET_MASK_1MB;

12
kernel/arch/earm/pg_utils.c
View file

@ -160,7 +160,7 @@ void pg_identity(kinfo_t *cbi)
u32_t flags = ARM_VM_SECTION
| ARM_VM_SECTION_USER
| ARM_VM_SECTION_DOMAIN;
phys = i * ARM_BIG_PAGE_SIZE;
phys = i * ARM_SECTION_SIZE;
pagedir[i] = phys | flags;
}
}
@ -170,16 +170,16 @@ int pg_mapkernel(void)
int pde;
u32_t mapped = 0, kern_phys = kern_phys_start;
assert(!(kern_vir_start % ARM_BIG_PAGE_SIZE));
assert(!(kern_phys_start % ARM_BIG_PAGE_SIZE));
pde = kern_vir_start / ARM_BIG_PAGE_SIZE; /* start pde */
assert(!(kern_vir_start % ARM_SECTION_SIZE));
assert(!(kern_phys_start % ARM_SECTION_SIZE));
pde = kern_vir_start / ARM_SECTION_SIZE; /* start pde */
while(mapped < kern_kernlen) {
pagedir[pde] = (kern_phys & ARM_VM_PDE_MASK) | ARM_VM_SECTION
| ARM_VM_SECTION_SUPER
| ARM_VM_SECTION_DOMAIN
| ARM_VM_SECTION_WT;
mapped += ARM_BIG_PAGE_SIZE;
kern_phys += ARM_BIG_PAGE_SIZE;
mapped += ARM_SECTION_SIZE;
kern_phys += ARM_SECTION_SIZE;
pde++;
}
return pde; /* free pde */

4
servers/vm/arch/earm/pagetable.h
View file

@ -19,7 +19,7 @@
#define PTF_SHARE ARM_VM_PTE_SHAREABLE
#define ARCH_VM_DIR_ENTRIES ARM_VM_DIR_ENTRIES
#define ARCH_BIG_PAGE_SIZE ARM_BIG_PAGE_SIZE
#define ARCH_BIG_PAGE_SIZE ARM_SECTION_SIZE
#define ARCH_VM_ADDR_MASK ARM_VM_ADDR_MASK
#define ARCH_VM_PDE_MASK ARM_VM_PDE_MASK
#define ARCH_VM_PDE_PRESENT ARM_VM_PDE_PRESENT
@ -27,7 +27,7 @@
#define ARCH_VM_PTE_USER ARM_VM_PTE_USER
#define ARCH_PAGEDIR_SIZE ARM_PAGEDIR_SIZE
#define ARCH_VM_PTE_RW ARM_VM_PTE_RW
#define ARCH_VM_BIGPAGE ARM_VM_BIGPAGE
#define ARCH_VM_BIGPAGE ARM_VM_SECTION
#define ARCH_VM_PT_ENTRIES ARM_VM_PT_ENTRIES
#define ARCH_VM_PTE_RO ARM_VM_PTE_RO