X86_CR3_LAM_U57
mm->context.lam_cr3_mask = X86_CR3_LAM_U57;
cr3 &= ~(X86_CR3_LAM_U48 | X86_CR3_LAM_U57);
return kvm_read_cr3(vcpu) & (X86_CR3_LAM_U48 | X86_CR3_LAM_U57);
if (!(cr3_bits & (X86_CR3_LAM_U57 | X86_CR3_LAM_U48)))
lam_bit = cr3_bits & X86_CR3_LAM_U57 ? 56 : 47;
WARN_ON(cr3 & (X86_CR3_LAM_U48 | X86_CR3_LAM_U57));