> From: Nadav Amit [mailto:nadav.amit@xxxxxxxxx] > Sent: Thursday, November 20, 2014 8:34 AM > To: Paolo Bonzini; Yu, Fenghua > Cc: kvm list > Subject: KVM causes #GP on XRSTORS > > Fenghua, > > I got KVM (v3.17) crashing on a machine that supports XRSTORS - It appears > to get a #GP when it is trying to load the guest FPU. > One reason for the #GP is that XCOMP_BV[63] is zeroed on the guest_fpu, > but I am not sure it is the only problem. > Was KVM ever tested with XRSTORS? In dmesg, do you see "xsave: ......... using compacted form"? If you use kernel "noxsaves", does KVM work fine? Thanks. -Fenghua -- 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
