On Sun, Jul 31, 2011 at 11:16:00AM +0300, Avi Kivity wrote: > On 07/30/2011 03:29 PM, André Weidemann wrote: > >>Looks like it tries to read MSR_LASTBRANCH_TOS MSR which kvm does not > >>support. Do you see something interesting in dmesg? I wonder how > >>availability of the MSR should be checked. > > > > > >You are right about the MSR. The log file from the time of > >occurrence shows the following: > > > >Jul 4 18:55:12 server kernel: [ 1528.618647] kvm: 3123: cpu1 > >kvm_set_msr_common: MSR_IA32_DEBUGCTLMSR 0x1, nop > >Jul 4 18:55:12 server kernel: [ 1528.619444] kvm: 3123: cpu1 > >unhandled rdmsr: 0x1c9 > > > > You can try > > $ rmmod kvm-intel kvm > $ modprobe kvm ignore_msrs=1 > $ modprobe kvm-intel > > (or kvm-amd, as the case may be) > > This will work around the issue, but the application may not > function correctly. > I wonder why Windows tries to use this MSR with -cpu host, but not with -cpu Nehalem. Both cpus have this MSR (it is supported back to P4 it seams). -- Gleb. -- 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
