On Fri, 2011-12-09 at 16:47 +1030, Rusty Russell wrote: > On Thu, 08 Dec 2011 17:37:37 +0200, Sasha Levin <levinsasha928@xxxxxxxxx> wrote: > > Which leads me to the question: Are MMIO vs MMIO reads/writes not > > ordered? > > That seems really odd, especially being repeatable. Happens every single time. Can't be a coincidence. I even went into paranoia mode and made sure that both IO requests come from the same vcpu. Another weird thing I've noticed is that mb() doesn't fix it, while if I replace the mb() with a printk() it works well. > BTW, that's an address, not a pfn now. Fixed :) -- Sasha. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
