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...res that PaX uses under a 64-bit kernel is the NX bit. I''m using the paxtest utility (available at http://paxgrsecurity.net) to test whether the NX bit is working. On a host with NX support, a 64-bit 2.6.18 xen kernel has a working NX bit. Under a vanilla 2.6.27.4 paravirt_ops kernel with HIGHMEM64 and PAE enabled however, the nx bit doesn''t seem to work. The nx flag is listed in /proc/cpuinfo on both the 2.6.18 and 2.6.27 guest. So my question is; does paravirt_ops support the use of the nx-bit? Cheers, Brad _______________________________________________ Xen-devel mailing list...