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

Andi Kleen
2021-10-12T18:38:00Z

On 10/11/2021 10:31 PM, Christoph Hellwig wrote:
> On Mon, Oct 11, 2021 at 03:09:09PM -0400, Michael S. Tsirkin wrote:
>> The reason we have trouble is that it's not clear what does the API mean
>> outside the realm of TDX.
>> If we really, truly want an API that says "ioremap and it's a hardened
>> driver" then I guess ioremap_hardened_driver is what you want.
> Yes. And why would be we ioremap the BIOS anyway? It is not I/O memory
> in any of the senses we generally use ioremap for.

I/O memory is anything outside the kernel memory map.

-Andi