# Re: \[PATCH v4 11/15\] pci: Add pci\_iomap\_shared{,\_range}

- From: Michael S. Tsirkin \<mst@redhat.com\>
- Date: 2021-09-11 23:54:50 
- List: linux-mips
- Page: https://ratatoskr.run/linux-mips/2021/09/1504385
- Thread: https://ratatoskr.run/linux-pci/2021/08/1468282/t.md

```text
On Fri, Sep 10, 2021 at 09:34:45AM -0700, Andi Kleen wrote:
> > > that's why
> > > an extra level of defense of ioremap opt-in is useful.
> > OK even assuming this, why is pci_iomap opt-in useful?
> > That never happens before probe - there's simply no pci_device then.
> 
> 
> Hmm, yes that's true. I guess we can make it default to opt-in for
> pci_iomap.
> 
> It only really matters for device less ioremaps.

OK. And same thing for other things with device, such as
devm_platform_ioremap_resource.
If we agree on all that, this will basically remove virtio
changes from the picture ;)

-- 
MST

```