Christoph Hellwig
2022-Apr-06 16:10 UTC
[PATCH 1/5] iommu: Replace uses of IOMMU_CAP_CACHE_COHERENCY with dev_is_dma_coherent()
On Wed, Apr 06, 2022 at 01:06:23PM -0300, Jason Gunthorpe wrote:> On Wed, Apr 06, 2022 at 05:50:56PM +0200, Christoph Hellwig wrote: > > On Wed, Apr 06, 2022 at 12:18:23PM -0300, Jason Gunthorpe wrote: > > > > Oh, I didn't know about device_get_dma_attr().. > > > > Which is completely broken for any non-OF, non-ACPI plaform. > > I saw that, but I spent some time searching and could not find an > iommu driver that would load independently of OF or ACPI. ie no IOMMU > platform drivers are created by board files. Things like Intel/AMD > discover only from ACPI, etc.s390?