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Merge remote-tracking branch 'qemu-kvm/memory/urgent' into staging 

* qemu-kvm/memory/urgent:
  kvm: fix unaligned slots
This commit is contained in:
Anthony Liguori 2012-03-01 15:26:55 -06:00
parent 14655e482b 8f6f962b99
commit 88e6c60671
1 changed files with 12 additions and 3 deletions
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15
kvm-all.c
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@ -542,17 +542,26 @@ static void kvm_set_phys_mem(MemoryRegionSection *section, bool add)
target_phys_addr_t start_addr = section->offset_within_address_space;
ram_addr_t size = section->size;
void *ram = NULL;
unsigned delta;
/* kvm works in page size chunks, but the function may be called
with sub-page size and unaligned start address. */
size = TARGET_PAGE_ALIGN(size);
start_addr = TARGET_PAGE_ALIGN(start_addr);
delta = TARGET_PAGE_ALIGN(size) - size;
if (delta > size) {
return;
}
start_addr += delta;
size -= delta;
size &= TARGET_PAGE_MASK;
if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
return;
}
if (!memory_region_is_ram(mr)) {
return;
}
ram = memory_region_get_ram_ptr(mr) + section->offset_within_region;
ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta;
while (1) {
mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size);