On 20/05/20 10:22, Li Feng wrote: >> - bit 2, vmx-exit-nosave-debugctl >> - bit 9, host address space size, is handled automatically by QEMU >> - bit 15, vmx-exit-ack-intr >> - bit 17, vmx-exit-save-pat >> - bit 18, vmx-exit-load-pat >> - bit 19, vmx-exit-save-efer >> - bit 20, vmx-exit-load-efer >> - bit 21, vmx-exit-save-preemption-timer >> >> Try removing all of these and see if QEMU starts: >> >> qemu-kvm ... -cpu >> host,-vmx-exit-nosave-debugctl,-vmx-exit-ack-intr,-vmx-exit-save-pat,-vmx-exit-load-pat,-vmx-exit-save-efer,-vmx-exit-load-efer,-vmx-exit-save-preemption-timer >> >> And then add them back one at a time. > Hi, Paolo. > Thanks, the crash is still here when removing the above features: > qemu-system-x86_64: error: failed to set MSR 0x48f to 0x36fff00036dff > > After computing xor, the result is 0b1000000000. > The bit 9 is set.
Are you running KVM with a 32-bit kernel. Paolo
