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memory: cpu_physical_memory_set_dirty_range() now uses bitmap operations

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We were setting a range of bits, so use bitmap_set().

Note: xen has always been wrong, and should have used start instead
of addr from the beginning.

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 2013-10-09 12:26:23 +02:00
parent 1bafff0c7c
commit 5b9a3a5f77
1 changed files with 7 additions and 12 deletions
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19
include/exec/memory-internal.h
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@ -81,19 +81,14 @@ static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
ram_addr_t length)
{
ram_addr_t addr, end;
unsigned long end, page;
end = TARGET_PAGE_ALIGN(start + length);
start &= TARGET_PAGE_MASK;
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
set_bit(addr >> TARGET_PAGE_BITS,
ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]);
set_bit(addr >> TARGET_PAGE_BITS,
ram_list.dirty_memory[DIRTY_MEMORY_VGA]);
set_bit(addr >> TARGET_PAGE_BITS,
ram_list.dirty_memory[DIRTY_MEMORY_CODE]);
}
xen_modified_memory(addr, length);
end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
page = start >> TARGET_PAGE_BITS;
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION], page, end - page);
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_VGA], page, end - page);
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_CODE], page, end - page);
xen_modified_memory(start, length);
}
static inline void cpu_physical_memory_clear_dirty_range(ram_addr_t start,