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kvm: Fix dirty log temporary buffer size
The buffer passed to KVM_GET_DIRTY_LOG requires one bit per page. Fix the size calculation in kvm_physical_sync_dirty_bitmap accordingly, avoiding allocation of extremly oversized buffers. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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@ -290,7 +290,7 @@ void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
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return;
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}
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alloc_size = mem->memory_size >> TARGET_PAGE_BITS / sizeof(d.dirty_bitmap);
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alloc_size = ((mem->memory_size >> TARGET_PAGE_BITS) + 7) / 8;
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d.dirty_bitmap = qemu_mallocz(alloc_size);
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d.slot = mem->slot;
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