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Fix off-by-one in dirty bitmap functions

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Reported-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Avi Kivity 2012-01-29 16:47:47 +02:00 committed by Blue Swirl
parent 9ec032d2ac
commit fd39941ac7
1 changed files with 6 additions and 4 deletions
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10
exec-obsolete.h
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@ -83,9 +83,10 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
uint8_t *p;
ram_addr_t addr, end;
end = start + length;
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) {
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
*p++ |= dirty_flags;
}
}
@ -98,10 +99,11 @@ static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
uint8_t *p;
ram_addr_t addr, end;
end = start + length;
end = TARGET_PAGE_ALIGN(start + length);
start &= TARGET_PAGE_MASK;
mask = ~dirty_flags;
p = ram_list.phys_dirty + (start >> TARGET_PAGE_BITS);
for (addr = start; addr <= end; addr += TARGET_PAGE_SIZE) {
for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
*p++ &= mask;
}
}