Re: [PATCH v5 12/16] PCI: Add pci_iomap_host_shared(), pci_iomap_host_shared_range()

Andi Kleen
2021-10-12T21:24:26Z

On 10/12/2021 2:18 PM, Michael S. Tsirkin wrote:
> On Tue, Oct 12, 2021 at 02:14:44PM -0700, Dan Williams wrote:
>> Especially in this case where the virtio use case being
>> opted-in is *already* in a path that has been authorized by the
>> device-filter policy engine.
> That's a good point. Andi, how about setting a per-device flag
> if its ID has been allowed and then making pci_iomap create
> a shared mapping transparently?

Yes for pci_iomap we could do that.

If someone uses raw ioremap without a device it won't work, but I don't
think that's the case for virtio at least.

I suppose we could solve that problem if it actually happens.

-Andi