linux-dev/drivers/iommu/amd, branch master

iommu: Add gfp parameter to iommu_alloc_resv_region

2022-10-21T08:49:32Z

Add gfp parameter to iommu_alloc_resv_region() for the callers to specify the memory allocation behavior. Thus iommu_alloc_resv_region() could also be available in critical contexts. Signed-off-by: Lu Baolu Tested-by: Alex Williamson Link: https://lore.kernel.org/r/20220927053109.4053662-2-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel

Merge branches 'apple/dart', 'arm/mediatek', 'arm/omap', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd' and 'core' into next

2022-09-26T13:52:31Z

iommu/amd: Fix sparse warning

2022-09-26T11:26:40Z

CHECK drivers/iommu/amd/iommu.c drivers/iommu/amd/iommu.c:73:24: warning: symbol 'amd_iommu_ops' was not declared. Should it be static? Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220912063248.7909-6-vasant.hegde@amd.com Signed-off-by: Joerg Roedel

iommu/amd: Remove outdated comment

2022-09-26T11:26:40Z

Comment is not related to amd_iommu_ops variable. Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220912063248.7909-5-vasant.hegde@amd.com Signed-off-by: Joerg Roedel

iommu/amd: Free domain ID after domain_flush_pages

2022-09-26T11:26:39Z

free_io_pgtable_ops() path uses domain ID to flush pages. Hence free domain ID after flushing everything. Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220912063248.7909-4-vasant.hegde@amd.com Signed-off-by: Joerg Roedel

iommu/amd: Free domain id in error path

2022-09-26T11:25:20Z

Call domain_id_free() in error path. Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220912063248.7909-2-vasant.hegde@amd.com Signed-off-by: Joerg Roedel

iommu: Fix false ownership failure on AMD systems with PASID activated

2022-09-11T06:30:41Z

The AMD IOMMU driver cannot activate PASID mode on a RID without the RID's translation being set to IDENTITY. Further it requires changing the RID's page table layout from the normal v1 IOMMU_DOMAIN_IDENTITY layout to a different v2 layout. It does this by creating a new iommu_domain, configuring that domain for v2 identity operation and then attaching it to the group, from within the driver. This logic assumes the group is already set to the IDENTITY domain and is being used by the DMA API. However, since the ownership logic is based on the group's domain pointer equaling the default domain to detect DMA API ownership, this causes it to look like the group is not attached to the DMA API any more. This blocks attaching drivers to any other devices in the group. In a real system this manifests itself as the HD-audio devices on some AMD platforms losing their device drivers. Work around this unique behavior of the AMD driver by checking for equality of IDENTITY domains based on their type, not their pointer value. This allows the AMD driver to have two IDENTITY domains for internal purposes without breaking the check. Have the AMD driver properly declare that the special domain it created is actually an IDENTITY domain. Cc: Robin Murphy Cc: stable@vger.kernel.org Fixes: 512881eacfa7 ("bus: platform,amba,fsl-mc,PCI: Add device DMA ownership management") Reported-by: Takashi Iwai Tested-by: Takashi Iwai Signed-off-by: Jason Gunthorpe Reviewed-by: Robin Murphy Link: https://lore.kernel.org/r/0-v1-ea566e16b06b+811-amd_owner_jgg@nvidia.com Signed-off-by: Joerg Roedel

Merge branch 'iommu/fixes' into core

2022-09-09T07:27:09Z

iommu/dma: Make header private

2022-09-09T07:26:22Z

Now that dma-iommu.h only contains internal interfaces, make it private to the IOMMU subsytem. Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/b237e06c56a101f77af142a54b629b27aa179d22.1660668998.git.robin.murphy@arm.com [ joro : re-add stub for iommu_dma_get_resv_regions ] Signed-off-by: Joerg Roedel

iommu/amd: Add command-line option to enable different page table

2022-09-07T14:12:37Z

Enhance amd_iommu command line option to specify v1 or v2 page table. By default system will boot in V1 page table mode. Co-developed-by: Suravee Suthikulpanit Signed-off-by: Suravee Suthikulpanit Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220825063939.8360-10-vasant.hegde@amd.com Signed-off-by: Joerg Roedel