On Mon, Jan 09, 2017 at 05:10:35PM +0530, Aravinda Prasad wrote: > This patch introduces a new KVM capability to control > how KVM behaves on machine check exception (MCE). > Without this capability, KVM redirects machine check > exceptions to guest's 0x200 vector, if the address in > error belongs to the guest. With this capability KVM > causes a guest exit with NMI exit reason. > > The new capability is required to avoid problems if > a new kernel/KVM is used with an old QEMU for guests > that don't issue "ibm,nmi-register". As old QEMU does > not understand the NMI exit type, it treats it as a > fatal error. However, the guest could have handled > the machine check error if the exception was delivered > to guest's 0x200 interrupt vector instead of NMI exit > in case of old QEMU. You need to add a description of the new capability to Documentation/virtual/kvm/api.txt. Paul. -- 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
