[PATCH 0/3] Support userspace irqchip with arch timers
Christoffer Dall
christoffer.dall at linaro.org
Fri Sep 30 08:43:35 PDT 2016
On Fri, Sep 30, 2016 at 05:38:11PM +0200, Alexander Graf wrote:
>
>
> On 30.09.16 16:54, Alexander Graf wrote:
> >
> >
> > On 27.09.16 21:08, Christoffer Dall wrote:
> >> Hi Alex,
> >>
> >> Marc and I have been looking at this during Linaro connect and have
> >> slightly reworked your patch into this small series.
> >>
> >> It would be good if you could have a look at it and test it out.
> >>
> >> I've tested it with your QEMU, and it works for UP, but secondary CPUs
> >> fail to come up, and it looks like the kernel never gets an IPI for
> >> those CPUs from userspace. Any chance you're willing to take a look at
> >> that?
> >
> > I still need to see whether I can come up with a prettier solution, but
> > for now this works:
> >
> > diff --git a/target-i386/kvm.c b/target-i386/kvm.c
>
> Eh, no, not in i386 code :). But the problem seems to be a missing
> mpstate sync.
>
Yeah, that looked really dodgy. Have you tested it? :)
-Christoffer
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