Luiz Capitulino reported that guest refused to boot and qemu complained with: kvm_set_phys_mem: error unregistering overlapping slot: Invalid argument It is caused by commit 235e8982ad that did double free for the memslot so that the second one raises the -EINVAL error Fix it by reset memory size only if it is needed Reported-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx> Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx> --- kvm-all.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/kvm-all.c b/kvm-all.c index 8e7bbf8..405480e 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -206,7 +206,8 @@ static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) if (s->migration_log) { mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; } - if (mem.flags & KVM_MEM_READONLY) { + + if (slot->memory_size && mem.flags & KVM_MEM_READONLY) { /* Set the slot size to 0 before setting the slot to the desired * value. This is needed based on KVM commit 75d61fbc. */ mem.memory_size = 0; -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html