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Re: [Qemu-ppc] [PATCH v2 11/13] spapr_irq: Allow synchronization of a si
Cédric Le Goater
Re: [Qemu-ppc] [PATCH v2 11/13] spapr_irq: Allow synchronization of a single irq state to KVM
Mon, 14 Jan 2019 17:29:48 +0100
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On 1/14/19 4:10 PM, Greg Kurz wrote:
> On Mon, 14 Jan 2019 09:19:50 +0100
> Cédric Le Goater <address@hidden> wrote:
>> On 1/11/19 10:04 PM, Greg Kurz wrote:
>>> When using the in-kernel interrupt controller, the state of all irqs is
>>> synchronized to KVM at machine reset time. In the case of PHB hotplug, we
>>> will need to synchronize LSIs manually.
>> Yes. This is because the interrupt sources in the KVM XICS device have
>> already been initialized as MSIs.
>> Can not we reset the source when it is claimed ?
>> An alternative solution would be to initialize the SPAPR_IRQ_PCI_LSI range
>> as LSIs at a KVM level.
> I don't really want to add some dependency to sPAPR code in KVM XICS... what
> about claiming LSIs for all possible PHBs at machine init time ?
you can not claim IRQ numbers twice. So if a new PHB is hot-plugged,
it will fail the claim its LSIs.
[Qemu-ppc] [PATCH v2 13/13] spapr: enable PHB hotplug for default pseries machine type, Greg Kurz, 2019/01/11
[Qemu-ppc] [PATCH v2 12/13] spapr: add hotplug hooks for PHB hotplug, Greg Kurz, 2019/01/11
Re: [Qemu-ppc] [PATCH v2 00/13] spapr: Add support for PHB hotplug, Michael S. Tsirkin, 2019/01/14
Re: [Qemu-ppc] [PATCH v2 00/13] spapr: Add support for PHB hotplug, Greg Kurz, 2019/01/15