[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen/arm: introduce platform_need_explicit_eoi
On Mon, 30 Jun 2014, Julien Grall wrote: > On 06/27/2014 04:51 PM, Ian Campbell wrote: > > On Mon, 2014-06-23 at 11:43 +0100, Stefano Stabellini wrote: > >> I thought about this concurrency problem and I think I managed to > >> solve it correctly. The solution I used was introducing a new flag > >> called "GIC_IRQ_GUEST_MIGRATING". See: > >> > >> 1402504032-13267-4-git-send-email-stefano.stabellini@xxxxxxxxxxxxx > > > > So, I'm not sure whether I should apply this patch now or wait for that > > series to go in first. What should I do? > > IIRC, I've asked Stefano to rewrote a bit the following paragraph. > > " > > No need to find the pcpu that needs to write to GICC_DIR, because after > > "physical irq follow virtual irq" we always inject the virtual irq on > > the vcpu that is running on the pcpu that received the interrupt. > " > > The "physical irq follow virtual irq" is part of the migration series > but this is not the reason that make GICC_DIR working. This is GIC > specific (even though, I can't find a clearly define behavior in the > specification). Yes, I'll rewrite and resend. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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