v1 Set: https://lore.kernel.org/linux-iommu/20200107134125.GD30750@xxxxxxxxxx/T/#t This revision introduces a new weak function to reference the dma alias, as well as using the struct device rather than the pci_dev. By using the weak function in this manner, we remove the need to add a pointer in struct device or pci_dev. Weak functions are generally frowned upon when it's a single architecture implementation, so I am open to alternatives. v1 Blurb: VMD currently works with VT-d enabled by pointing DMA and IOMMU actions at the VMD endpoint. The problem with this approach is that the VMD endpoint's device-specific attributes, such as the dma mask, are used instead. This set cleans up VMD by removing the override that redirects dma map operations to the VMD endpoint. Instead it introduces a new dma alias mechanism into the existing dma alias infrastructure. Changes from v1: Removed 1/5 & 2/5 misc fix patches that were merged Uses Christoph's staging/cleanup patches Introduce weak function rather than including pointer in struct device or pci_dev. Based on Joerg's next: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/ Christoph Hellwig (2): x86/pci: Add a to_pci_sysdata helper x86/pci: Replace the vmd_domain field with a vmd_dev pointer Jon Derrick (3): PCI: Introduce direct dma alias PCI: vmd: Stop overriding dma_map_ops x86/pci: Remove X86_DEV_DMA_OPS arch/x86/Kconfig | 3 - arch/x86/include/asm/device.h | 10 --- arch/x86/include/asm/pci.h | 31 ++++----- arch/x86/pci/common.c | 45 ++---------- drivers/iommu/intel-iommu.c | 17 +++-- drivers/pci/controller/Kconfig | 1 - drivers/pci/controller/vmd.c | 152 +---------------------------------------- drivers/pci/pci.c | 17 ++++- drivers/pci/search.c | 9 +++ include/linux/pci.h | 1 + 10 files changed, 60 insertions(+), 226 deletions(-) -- 1.8.3.1
