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Re: [Xen-devel] [BUG] After upgrade to Xen 4.12.0 iommu=no-igfx
On Fri, Jul 26, 2019 at 1:06 AM Jan Beulich <JBeulich@xxxxxxxx> wrote:
>
> On 23.07.2019 20:25, Roman Shaposhnik wrote:
> > Interestingly enough, adding iommu_inclusive_mapping=1 AND iommu=debug
> > booted the system just fine.
>
> Btw (I've noticed this only now) - are you saying without "iommu=debug"
> the box does _not_ boot fine, despite the other option?
Yes. But it made sense to me since iommu=debug (as per your
explanation) overwhelms the CPU and I guess adding
iommu_inclusive_mapping=1 avoids the code path that does it?
Thanks,
Roman.
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