2014-12-04 16:57+0100, Paolo Bonzini: > Userspace is expecting non-compacted format for KVM_GET_XSAVE, but > struct xsave_struct might be using the compacted format. Convert > in order to preserve userspace ABI. > > Likewise, userspace is passing non-compacted format for KVM_SET_XSAVE > but the kernel will pass it to XRSTORS, and we need to convert back. > > Fixes: f31a9f7c71691569359fa7fb8b0acaa44bce0324 > Cc: Fenghua Yu <fenghua...@intel.com> > Cc: sta...@vger.kernel.org > Cc: H. Peter Anvin <h...@linux.intel.com> > Reported-by: Nadav Amit <na...@cs.technion.ac.il> > Tested-by: Nadav Amit <na...@cs.technion.ac.il> > Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> > ---
Reviewed-by: Radim Krčmář <rkrc...@redhat.com> > +++ b/arch/x86/kvm/x86.c > @@ -3132,15 +3132,89 @@ static int kvm_vcpu_ioctl_x86_set_debugregs(struct > kvm_vcpu *vcpu, > + u64 xstate_bv = xsave->xsave_hdr.xstate_bv; (This looks like the only change since last review.) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
