>>> On 16.11.18 at 18:43, <[email protected]> wrote: > On 16/11/2018 10:11, Jan Beulich wrote: >>>>> On 15.11.18 at 22:47, <[email protected]> wrote: >>> Boris has confirmed that noone appears to be using PVRDTSCP any more, and in >>> the decade since it was introduced, guest kernel / hardware support has >>> provided a better alternative. >> Doesn't removal of functionality require knowing that it was never used >> at all, rather than just knowing that nothing uses it anymore? What if >> some old guest somewhere relies on it? > > Its an all-or-nothing feature. The entirety of your VM userspace need > to support it, or timing will go wrong on migrate. > > We already established that it appears to be a vestigial Oracle-ism for > which no consumer side code ever appeared, and that isn't used. > > What is unacceptable is PVRDTSCP's implementation causing breakages in > architectural behaviour for non-PVRDTSCP configurations, and one way or > another, this needs fixing. > > Please can we make a decision, because I don't have to time (or indeed, > the want) to and fix this a 3rd different way if that's going to run > into a similar reaction.
With Konrad's statement I'm fine with the removal. I'll get to look at the individual patches. Jan _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
