Hi, When KVM's check_cr_write() is invoked to write to %cr3, it tests that the lower three bits of %cr3 are set to zero. On real h/w (tested on Core2, K10), these bits are ignored; the AMD64 documentation describes the bits as 'should', but not 'must' be zero. The Intel documentation seems to indicate that the bits are ignored as well. I don't know whether to call this a bug or not, but it is a divergence from real h/w. Thanks, -- vs; _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization