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Re: [Qemu-devel] [PATCH v3 0/5] intel-iommu: introduce Intel IOMMU (VT-d

From: Jan Kiszka
Subject: Re: [Qemu-devel] [PATCH v3 0/5] intel-iommu: introduce Intel IOMMU (VT-d) emulation to q35 chipset
Date: Tue, 19 Aug 2014 07:36:47 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

On 2014-08-19 06:08, Knut Omang wrote:
>> Are you depending on interrupt remapping? If not, my patches are a bit
>> hacky and may cause their own issues if you are unlucky.
> It does not depend directly but interprets a NULL PciDevice pointer as
> the special bus number (0xff) for non-pci devices, so I have tried to

Yeah, this won't map nicely on future chipsets - unless we redefine
Q35_PSEUDO_XXX as VTD_PSEUDO_XXX, or so, and use the same values for all
of them. Or create an unconnected pseudo PCI bus for the chipset devices
that carry the pseudo bus number.

> take heights for that - I can rebase if so desired, but I would like to
> see the interrupt remapping emerge as well ;-)

Good, then we are already two ;). Let's get the baseline ready, then we
can discuss extensions like interrupt remapping.


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