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memory: change dirty getting API to take a size

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Instead of each device knowing or guessing the guest page size,
just pass the desired size of dirtied memory area.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2012-01-22 16:38:21 +00:00
parent cb437e48ab
commit cd7a45c95e
9 changed files with 45 additions and 48 deletions
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17
hw/vga.c
View file

@ -1742,17 +1742,10 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
if (!(s->cr[0x17] & 2)) {
addr = (addr & ~0x8000) | ((y1 & 2) << 14);
}
page0 = addr & TARGET_PAGE_MASK;
page1 = (addr + bwidth - 1) & TARGET_PAGE_MASK;
update = full_update |
memory_region_get_dirty(&s->vram, page0, DIRTY_MEMORY_VGA) |
memory_region_get_dirty(&s->vram, page1, DIRTY_MEMORY_VGA);
if ((page1 - page0) > TARGET_PAGE_SIZE) {
/* if wide line, can use another page */
update |= memory_region_get_dirty(&s->vram,
page0 + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
}
page0 = addr;
page1 = addr + bwidth - 1;
update = memory_region_get_dirty(&s->vram, page0, page1,
DIRTY_MEMORY_VGA);
/* explicit invalidation for the hardware cursor */
update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
if (update) {
@ -1798,7 +1791,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
if (page_max >= page_min) {
memory_region_reset_dirty(&s->vram,
page_min,
page_max + TARGET_PAGE_SIZE - page_min,
page_max - page_min,
DIRTY_MEMORY_VGA);
}
memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);