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SubjectRe: Xen regression, Was: [PATCH] x86/irq: Probe for PIC presence before allocating descs for legacy IRQs
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On 04/12/2016 07:15 PM, Stefano Stabellini wrote:
> On Tue, 12 Apr 2016, Boris Ostrovsky wrote:
>> On 04/12/2016 05:56 PM, Stefano Stabellini wrote:
>>> I am not sure, maybe you didn't have CONFIG_SPARSE_IRQ?
>>> But I am certain that 4.6-rc2, with the attached config, fails as Dom0
>>> on QEMU with the following sequence of calls:
>> I did have CONFIG_SPARSE_IRQ and I just rebuilt 4.5.0 with your config
>> (4.6-rc3 doesn't build for me for some reason) and that booted dom0 as well.
>>
>> BTW, what do you mean by "dom0 on QEMU"?
>
> I am running Xen and Linux inside a QEMU x86_64 emulated machine (nested
> virt).

This I, of course, never tried.

But given that things work in a single-level virt, doesn't this imply
that perhaps there is something in the emulation that's not quite right?

-boris

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