On Thu, 2007-07-05 at 16:55 -0500, Scott Wood wrote: > To maintain compatibility with these versions, we could change the test > in do_page_fault() to include VM_READ as well as VM_EXEC on targets that > don't have a separate exec-bit in hardware (are there any powerpc mmus > that do?).
64-bit implementations since POWER4 have separate exec permissions, don't they? So any userspace which tries to execute non-executable pages is already broken when running on a ppc64 machine; I wouldn't worry too much about letting it break on ppc32 too. We already use vDSO signal trampolines even on the 32-bit kernel, right? -- dwmw2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
