Thought about adding VDSO versions of clock_gettime() and gettimeofday64() to linux/arch/sh after seeing https://git.musl-libc.org/cgit/musl/commit/?id=f2375aacac13 and checking https://man7.org/linux/man-pages/man7/vdso.7.html
Adding two new functions to https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/sh/kernel/vsyscall/vsyscall.lds.S#n75 seems easy enough but where to add the function? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/sh/kernel/vsyscall/vsyscall-sigreturn.S is assembly salad and there's bits of it in arch/sh/kernel/signal_32.c too.
The downside of not having a simple example to copy. The architecture's current examples are giant swiss army knives of complexity.
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