On Fri, 2015-02-06 at 08:25 -0800, Linus Torvalds wrote: > On Fri, Feb 6, 2015 at 6:49 AM, Raghavendra K T > <raghavendra.kt@xxxxxxxxxxxxxxxxxx> wrote: > > Paravirt spinlock clears slowpath flag after doing unlock. > [ fix edited out ] > > So I'm not going to be applying this for 3.19, because it's much too > late and the patch is too scary. Plus the bug probably effectively > never shows up in real life (it is probably easy to trigger the > speculative *read* but probably never the actual speculative write > after dropping the lock last). > > This will need a lot of testing by the paravirt people - both > performance and correctness. So *maybe* for 3.20, but maybe for even > later, and then marked for stable, of course. > > Are there any good paravirt stress-tests that people could run for > extended times? locktorture inside a VM should give a proper pounding. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
