On Thursday 12 January 2017 03:26 PM, Paul Mackerras wrote: > 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. sure. > > Paul. > -- Regards, Aravinda -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
