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memory: cpu_physical_memory_mask_dirty_range() always clears a single flag

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Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This commit is contained in:
Juan Quintela
2013-10-08 12:44:04 +02:00
parent 75218e7f2b
commit 5215919291
5 changed files with 34 additions and 42 deletions
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40
include/exec/memory-internal.h
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@@ -40,29 +40,25 @@ void *qemu_get_ram_ptr(ram_addr_t addr);
void qemu_ram_free(ram_addr_t addr);
void qemu_ram_free_from_ptr(ram_addr_t addr);
#define VGA_DIRTY_FLAG 0x01
#define CODE_DIRTY_FLAG 0x02
#define MIGRATION_DIRTY_FLAG 0x08
static inline bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr,
int dirty_flag)
unsigned client)
{
return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] & dirty_flag;
return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] & (1 << client);
}
/* read dirty bit (return 0 or 1) */
static inline bool cpu_physical_memory_is_dirty(ram_addr_t addr)
{
bool vga = cpu_physical_memory_get_dirty_flag(addr, VGA_DIRTY_FLAG);
bool code = cpu_physical_memory_get_dirty_flag(addr, CODE_DIRTY_FLAG);
bool vga = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_VGA);
bool code = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_CODE);
bool migration =
cpu_physical_memory_get_dirty_flag(addr, MIGRATION_DIRTY_FLAG);
cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
return vga && code && migration;
}
static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
ram_addr_t length,
int dirty_flag)
unsigned client)
{
int ret = 0;
ram_addr_t addr, end;
@@ -70,28 +66,28 @@ static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
end = TARGET_PAGE_ALIGN(start + length);
start &= TARGET_PAGE_MASK;
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
ret |= cpu_physical_memory_get_dirty_flag(addr, dirty_flag);
ret |= cpu_physical_memory_get_dirty_flag(addr, client);
}
return ret;
}
static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
int dirty_flag)
unsigned client)
{
ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flag;
ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= (1 << client);
}
static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
{
cpu_physical_memory_set_dirty_flag(addr, MIGRATION_DIRTY_FLAG);
cpu_physical_memory_set_dirty_flag(addr, VGA_DIRTY_FLAG);
cpu_physical_memory_set_dirty_flag(addr, CODE_DIRTY_FLAG);
cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_VGA);
cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_CODE);
}
static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
int dirty_flags)
static inline int cpu_physical_memory_clear_dirty_flag(ram_addr_t addr,
unsigned client)
{
int mask = ~dirty_flags;
int mask = ~(1 << client);
return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
}
@@ -111,19 +107,19 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
ram_addr_t length,
int dirty_flags)
unsigned client)
{
ram_addr_t addr, end;
end = TARGET_PAGE_ALIGN(start + length);
start &= TARGET_PAGE_MASK;
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
cpu_physical_memory_clear_dirty_flag(addr, client);
}
}
void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
int dirty_flags);
unsigned client);
#endif