On Thu, Feb 24, 2022 at 11:18:33AM -0500, Boris Ostrovsky wrote:

On 2/24/22 10:58 AM, Christoph Hellwig wrote:

quoted

Thanks.

This looks really strange as early_amd_iommu_init should not interact much
with the changes.  I'll see if I can find a AMD system to test on.

Just to be clear: this crashes only as dom0. Boots fine as baremetal.

Ah.  I can gues what this might be.  On Xen the hypervisor controls the
IOMMU and we should never end up initializing it in Linux, right?