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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/generic/src/mm/as.c @ 755

  → /kernel/trunk/generic/src/mm/as.c @ 756

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 755 → Rev 756

/kernel/trunk/generic/src/mm/as.c
33,7 → 33,7
*/
#include <mm/as.h>
#include <mm/asid.h>
#include <arch/mm/as.h>
#include <mm/page.h>
#include <mm/frame.h>
#include <mm/tlb.h>
42,7 → 42,6
#include <genarch/mm/page_pt.h>
#include <mm/asid.h>
#include <arch/mm/asid.h>
#include <arch/mm/as.h>
#include <arch/types.h>
#include <typedefs.h>
#include <synch/spinlock.h>
55,18 → 54,21
#include <arch.h>
#include <print.h>
#define KAS_START_INDEX PTL0_INDEX(KERNEL_ADDRESS_SPACE_START)
#define KAS_END_INDEX PTL0_INDEX(KERNEL_ADDRESS_SPACE_END)
#define KAS_INDICES (1+(KAS_END_INDEX-KAS_START_INDEX))
as_operations_t *as_operations = NULL;
static int get_area_flags(as_area_t *a);
/** Initialize address space subsystem. */
void as_init(void)
{
as_arch_init();
AS_KERNEL = as_create(FLAG_AS_KERNEL);
if (!AS_KERNEL)
panic("can't create kernel address space\n");
}
/** Create address space. */
/*
* FIXME: this interface must be meaningful for all possible VAT
* (Virtual Address Translation) mechanisms.
*/
as_t *as_create(pte_t *ptl0, int flags)
as_t *as_create(int flags)
{
as_t *as;
81,20 → 83,7
else
as->asid = ASID_INVALID;
as->ptl0 = ptl0;
if (!as->ptl0) {
pte_t *src_ptl0, *dst_ptl0;
src_ptl0 = (pte_t *) PA2KA((__address) GET_PTL0_ADDRESS());
dst_ptl0 = (pte_t *) frame_alloc(FRAME_KA | FRAME_PANIC, ONE_FRAME, NULL);
// memsetb((__address) dst_ptl0, PAGE_SIZE, 0);
// memcpy((void *) &dst_ptl0[KAS_START_INDEX], (void *) &src_ptl0[KAS_START_INDEX], KAS_INDICES);
memcpy((void *) dst_ptl0,(void *) src_ptl0, PAGE_SIZE);
as->ptl0 = (pte_t *) KA2PA((__address) dst_ptl0);
}
as->page_table = page_table_create(flags);
}
return as;
186,7 → 175,7
* Note: area->lock is held.
*/
page_mapping_insert(as, page, frame, get_area_flags(area), (__address) as->ptl0);
page_mapping_insert(as, page, frame, get_area_flags(area));
spinlock_unlock(&area->lock);
spinlock_unlock(&as->lock);
266,7 → 255,7
* Note that TLB shootdown is not attempted as only new information is being
* inserted into page tables.
*/
page_mapping_insert(AS, page, frame, get_area_flags(area), (__address) AS->ptl0);
page_mapping_insert(AS, page, frame, get_area_flags(area));
spinlock_unlock(&area->lock);
spinlock_unlock(&AS->lock);
286,8 → 275,8
ipl = interrupts_disable();
spinlock_lock(&as->lock);
ASSERT(as->ptl0);
SET_PTL0_ADDRESS(as->ptl0);
ASSERT(as->page_table);
SET_PTL0_ADDRESS(as->page_table);
spinlock_unlock(&as->lock);
interrupts_restore(ipl);
327,3 → 316,20
return flags;
}
/** Create page table.
*
* Depending on architecture, create either address space
* private or global page table.
*
* @param flags Flags saying whether the page table is for kernel address space.
*
* @return First entry of the page table.
*/
pte_t *page_table_create(int flags)
{
ASSERT(as_operations);
ASSERT(as_operations->page_table_create);
return as_operations->page_table_create(flags);
}