Hi all- Linux has a handful of weird features that are only supported for backwards compatibility. The big one is the x86_64 vsyscall page, but uselib probably belongs on the list, too, and we might end up with more at some point.
I'd like to add a way that new programs can turn these features off. In particular, I want the vsyscall page to be completely gone from the perspective of any new enough program. This is straightforward if we add a system call to ask for the vsyscall page to be disabled, but I'm wondering if we can come up with a non-syscall way to do it. I think that the ideal behavior would be that anything linked against a sufficiently new libc would be detected, but I don't see a good way to do that using existing toolchain features. Ideas? We could add a new phdr for this, but then we'd need to play linker script games, and I'm not sure that could be done in a clean, extensible way. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
