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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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7
arch_init.c
View File

@ -141,7 +141,8 @@ static int ram_save_block(QEMUFile *f)
do {
mr = block->mr;
if (memory_region_get_dirty(mr, offset, DIRTY_MEMORY_MIGRATION)) {
if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
DIRTY_MEMORY_MIGRATION)) {
uint8_t *p;
int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
@ -198,7 +199,7 @@ static ram_addr_t ram_save_remaining(void)
QLIST_FOREACH(block, &ram_list.blocks, next) {
ram_addr_t addr;
for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
if (memory_region_get_dirty(block->mr, addr,
if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
DIRTY_MEMORY_MIGRATION)) {
count++;
}
@ -283,7 +284,7 @@ int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
/* Make sure all dirty bits are set */
QLIST_FOREACH(block, &ram_list.blocks, next) {
for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
if (!memory_region_get_dirty(block->mr, addr,
if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
DIRTY_MEMORY_MIGRATION)) {
memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
}

15
exec-obsolete.h
View File

@ -59,10 +59,21 @@ static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
}
static inline int cpu_physical_memory_get_dirty(ram_addr_t addr,
static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
ram_addr_t length,
int dirty_flags)
{
return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] & dirty_flags;
int ret = 0;
uint8_t *p;
ram_addr_t addr, end;
end = TARGET_PAGE_ALIGN(start + length);
start &= TARGET_PAGE_MASK;
p = ram_list.phys_dirty + (start >> TARGET_PAGE_BITS);
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
ret |= *p++ & dirty_flags;
}
return ret;
}
static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)

9
hw/framebuffer.c
View File

@ -87,15 +87,8 @@ void framebuffer_update_display(
dest += i * dest_row_pitch;
for (; i < rows; i++) {
target_phys_addr_t dirty_offset;
dirty = 0;
dirty_offset = 0;
while (addr + dirty_offset < TARGET_PAGE_ALIGN(addr + src_width)) {
dirty |= memory_region_get_dirty(mem, addr + dirty_offset,
dirty = memory_region_get_dirty(mem, addr, addr + src_width,
DIRTY_MEMORY_VGA);
dirty_offset += TARGET_PAGE_SIZE;
}
if (dirty || invalidate) {
fn(opaque, dest, src, cols, dest_col_pitch);
if (first == -1)

3
hw/g364fb.c
View File

@ -62,7 +62,8 @@ typedef struct G364State {
static inline int check_dirty(G364State *s, ram_addr_t page)
{
return memory_region_get_dirty(&s->mem_vram, page, DIRTY_MEMORY_VGA);
return memory_region_get_dirty(&s->mem_vram, page, G364_PAGE_SIZE,
DIRTY_MEMORY_VGA);
}
static inline void reset_dirty(G364State *s,

11
hw/sm501.c
View File

@ -1323,15 +1323,12 @@ static void sm501_draw_crt(SM501State * s)
for (y = 0; y < height; y++) {
int update_hwc = draw_hwc_line ? within_hwc_y_range(s, y, 1) : 0;
int update = full_update || update_hwc;
ram_addr_t page0 = offset & TARGET_PAGE_MASK;
ram_addr_t page1 = (offset + width * src_bpp - 1) & TARGET_PAGE_MASK;
ram_addr_t page;
ram_addr_t page0 = offset;
ram_addr_t page1 = offset + width * src_bpp - 1;
/* check dirty flags for each line */
for (page = page0; page <= page1; page += TARGET_PAGE_SIZE)
if (memory_region_get_dirty(&s->local_mem_region, page,
DIRTY_MEMORY_VGA))
update = 1;
update = memory_region_get_dirty(&s->local_mem_region, page0, page1,
DIRTY_MEMORY_VGA);
/* draw line and change status */
if (update) {

13
hw/tcx.c
View File

@ -178,15 +178,13 @@ static inline int check_dirty(TCXState *s, ram_addr_t page, ram_addr_t page24,
ram_addr_t cpage)
{
int ret;
unsigned int off;
ret = memory_region_get_dirty(&s->vram_mem, page, DIRTY_MEMORY_VGA);
for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
ret |= memory_region_get_dirty(&s->vram_mem, page24 + off,
ret = memory_region_get_dirty(&s->vram_mem, page, TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
ret |= memory_region_get_dirty(&s->vram_mem, cpage + off,
ret |= memory_region_get_dirty(&s->vram_mem, page24, TARGET_PAGE_SIZE * 4,
DIRTY_MEMORY_VGA);
ret |= memory_region_get_dirty(&s->vram_mem, cpage, TARGET_PAGE_SIZE * 4,
DIRTY_MEMORY_VGA);
}
return ret;
}
@ -245,7 +243,8 @@ static void tcx_update_display(void *opaque)
}
for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
if (memory_region_get_dirty(&ts->vram_mem, page, DIRTY_MEMORY_VGA)) {
if (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA)) {
if (y_start < 0)
y_start = y;
if (page < page_min)

15
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,
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);

5
memory.c
View File

@ -1136,10 +1136,11 @@ void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
}
bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
unsigned client)
target_phys_addr_t size, unsigned client)
{
assert(mr->terminates);
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, 1 << client);
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size,
1 << client);
}
void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr,

9
memory.h
View File

@ -380,20 +380,21 @@ void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset);
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client);
/**
* memory_region_get_dirty: Check whether a page is dirty for a specified
* client.
* memory_region_get_dirty: Check whether a range of bytes is dirty
* for a specified client.
*
* Checks whether a page has been written to since the last
* Checks whether a range of bytes has been written to since the last
* call to memory_region_reset_dirty() with the same @client. Dirty logging
* must be enabled.
*
* @mr: the memory region being queried.
* @addr: the address (relative to the start of the region) being queried.
* @size: the size of the range being queried.
* @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
* %DIRTY_MEMORY_VGA.
*/
bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
unsigned client);
target_phys_addr_t size, unsigned client);
/**
* memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.