13 Nov
2025
13 Nov
'25
11:28 p.m.
On Fri, Nov 07, 2025 at 12:49:37PM -0400, Jason Gunthorpe wrote:
Addresses intended for MMIO should be propagated through to the iommu with the IOMMU_MMIO flag set.
Keep track in the batch if all the pfns are cachable or mmio and flush the batch out of it ever needs to be changed. Switch to IOMMU_MMIO if the batch is MMIO when mapping the iommu.
Signed-off-by: Jason Gunthorpe jgg@nvidia.com
Reviewed-by: Nicolin Chen nicolinc@nvidia.com