> On Nov 24, 2014, at 19:53, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > > > On 24/11/2014 16:28, Nadav Amit wrote: >> >> Since kvm_load_guest_fpu is called before the guest_fpu is ever stored, there are 2 more problems that currently cause #GP: >> 1. XCOMP_BV[63] = 0 >> 2. XSTATE_BV sets a bit (including bit 63) that is not set in XCOMP_BV (XCOMP_BV is initialised to zero). >> >> [see SDM 13.11 "OPERATION OF XRSTORS”] >> >> Once I initialise XCOMP_BV to (1ull << 63) | XSTATE_BV, the guest runs successfully. >> I have not checked any other qemu functionality that might be affected by the patch. > > I posted patches that assume that QEMU calls KVM_SET_XSAVE early enough. > If this is not the case, can you cook up and post a patch to > kvm_arch_vcpu_init that fixes the remaining problem? Sure. I will try to do so tomorrow. Nadav -- 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
