Il 13/05/2014 17:04, Paolo Bonzini ha scritto:
KVM used to assume that CS.RPL could always be used as the CPL
value when KVM_SET_SREGS is called. QEMU could call KVM_GET_SREGS
and the KVM_SET_SREGS exactly after CR0.PE has been set to 1,
but before the long jump that reloads CS. Then, KVM would
KVM used to assume that CS.RPL could always be used as the CPL
value when KVM_SET_SREGS is called. QEMU could call KVM_GET_SREGS
and the KVM_SET_SREGS exactly after CR0.PE has been set to 1,
but before the long jump that reloads CS. Then, KVM would reset
the CPL to bits 0-1 of CS (aka CS.RPL).
T
