Re: [Xen-devel] HVMlite ABI specification DRAFT A

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 08/02/16 12:10, Stefano Stabellini wrote:
> On Fri, 5 Feb 2016, Andrew Cooper wrote:
>> The current pci-front/back and Qemu-based methods have substantial
>> architectural deficiencies, and are incredibly fragile to change.  When
>> was the last XSA to PCI Passthrough which didn't end up requiring
>> further bugfixes to undo the collateral damage?
> 
> What's the problem with the pcifront/pciback model exactly (aside from
> being tied to pirqs, but we already had a plan to fix that so that we
> could use them on ARM, where we always have a GIC interrupt controller)?

The most obvious is that it doesn't work for dom0.

David

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