On 23/12/19 21:10, Peter Xu wrote: >> Yes, kvm->slots_lock is taken by x86_set_memory_region. We need to move >> that to the callers, of which several are already taking the lock (all >> except vmx_set_tss_addr and kvm_arch_destroy_vm). > OK, will do. I'll directly replace the x86_set_memory_region() calls > in kvm_arch_destroy_vm() to be __x86_set_memory_region() since IIUC > the slots_lock is helpless when destroying the vm... then drop the > x86_set_memory_region() helper in the next version. Thanks, Be careful because it may cause issues with lockdep. Better just take the lock. Paolo