On Tue, Sep 01, 2020 at 10:25:52AM +0100, Catalin Marinas wrote:
Thanks Shuah for the ack. We are still pondering whether the merge these patches as they have some limitations (the per-CPU data structures may not fit in the sole data vDSO page).
They definitely don't fit, I did have some half-written proof of concept patches that I posted that extend this but I was waiting to see if there was any interest in a vDSO getcpu() at all before taking it further. Vincenzo's work on doing the multipage user data that he announced at Plumbers would cover it as well, I hadn't been aware of that.