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* Zachary Amsden (zach@vmware.com) wrote: > >+ DEFINE(VSYSCALL_BASE, (PAGE_OFFSET - 2*PAGE_SIZE)); > > Ok, I'm confused. What fixed math? Sorry, bad choice of words. From above, the VYSYCALL_BASE is known at compile time (in asm-offsets.h). So the SYSENTER_RETURN is still fixed addr. For execshield it's truly dynamic, so you get something like this instead of the constant SYSENTER_RETURN: - pushl $SYSENTER_RETURN + pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp) thanks, -chris - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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