Re: [PATCH uq/master] kvm: x86: Separately write feature control MSR on reset

2013-12-18 Thread Paolo Bonzini
Il 17/12/2013 20:05, Jan Kiszka ha scritto: > If the guest is running in nested mode on system reset, clearing the > feature MSR signals the kernel to leave this mode. Recent kernels > processes this properly, but leave the VCPU state undefined behind. It > is the job of userspace to bring it to a

[PATCH uq/master] kvm: x86: Separately write feature control MSR on reset

2013-12-17 Thread Jan Kiszka
If the guest is running in nested mode on system reset, clearing the feature MSR signals the kernel to leave this mode. Recent kernels processes this properly, but leave the VCPU state undefined behind. It is the job of userspace to bring it to a proper shape. Therefore, write this specific MSR fir