On Thu, 3 Mar 2022, Christoph Hellwig wrote:

On Wed, Mar 02, 2022 at 05:25:10PM -0800, Stefano Stabellini wrote:

quoted

Thinking more about it we actually need to drop the xen_initial_domain()
check otherwise some cases won't be functional (Dom0 not 1:1 mapped, or
DomU 1:1 mapped).

Hmm, but that would be the case even before this series, right?

Before this series we only have the xen_swiotlb_detect() check in
xen_mm_init, we don't have a second xen_initial_domain() check.

The issue is that this series is adding one more xen_initial_domain()
check in xen_mm_init.