Il 09/09/2013 12:22, SPA ha scritto: > Thanks Paolo. > > Is there a way where reads would trap ? > > I explored a bit on PM_PRESENT_MASK. Though its not READ bit, but a > PRESENT bit, it looks like it should generate traps on reads if this > bit is reset. From code, looks like rmap_write_protect() like function > I stated in previous mail should do. Would this approach work ? Are > there any glaring problems with this approach ? I cannot say right away. Another way could be to set reserved bits to generate EPT misconfigurations. See ept_set_mmio_spte_mask and is_mmio_spte. This would trap both reads and writes. Paolo -- 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
