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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /trunk/kernel/generic/src/mm/backend_anon.c @ 2133

  → /trunk/kernel/generic/src/mm/backend_anon.c @ 2134

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 2133 → Rev 2134

/trunk/kernel/generic/src/mm/backend_anon.c
78,6 → 78,7
int anon_page_fault(as_area_t *area, uintptr_t addr, pf_access_t access)
{
uintptr_t frame;
bool dirty = false;
if (!as_area_check_access(area, access))
return AS_PF_FAULT;
94,7 → 95,7
*/
mutex_lock(&area->sh_info->lock);
frame = (uintptr_t) btree_search(&area->sh_info->pagemap,
ALIGN_DOWN(addr, PAGE_SIZE) - area->base, &leaf);
ALIGN_DOWN(addr, PAGE_SIZE) - area->base, &leaf);
if (!frame) {
bool allocate = true;
int i;
113,6 → 114,7
if (allocate) {
frame = (uintptr_t) frame_alloc(ONE_FRAME, 0);
memsetb(PA2KA(frame), FRAME_SIZE, 0);
dirty = true;
/*
* Insert the address of the newly allocated
143,6 → 145,7
*/
frame = (uintptr_t) frame_alloc(ONE_FRAME, 0);
memsetb(PA2KA(frame), FRAME_SIZE, 0);
dirty = true;
}
/*
154,6 → 157,21
if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
panic("Could not insert used space.\n");
#ifdef CONFIG_VIRT_IDX_DCACHE
if (dirty && PAGE_COLOR(PA2KA(frame)) != PAGE_COLOR(addr)) {
/*
* By writing to the frame using kernel virtual address,
* we have created an illegal virtual alias. We now have to
* invalidate cachelines belonging to addr on all processors
* so that they will be reloaded with the new content on next
* read.
*/
dcache_flush_frame(addr, frame);
dcache_shootdown_start(DCACHE_INVL_FRAME, PAGE_COLOR(addr), frame);
dcache_shootdown_finalize();
}
#endif
return AS_PF_OK;
}
168,9 → 186,6
void anon_frame_free(as_area_t *area, uintptr_t page, uintptr_t frame)
{
frame_free(frame);
#ifdef CONFIG_VIRT_IDX_DCACHE
dcache_flush_frame(page, frame);
#endif
}
/** Share the anonymous address space area.
217,7 → 232,7
pfn_t pfn = ADDR2PFN(PTE_GET_FRAME(pte));
frame_reference_add(pfn);
}
}
}
mutex_unlock(&area->sh_info->lock);