iommu/amd: Add IO page fault notifier handler

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Whenever there is a page fault IOMMU logs entry to ppr log and sends
interrupt to host. We have to handle the page fault and respond to IOMMU.

Add support to validate page fault request and hook it to core iommu
page fault handler.

Signed-off-by: Wei Huang <wei.huang2@amd.com>
Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Co-developed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240418103400.6229-12-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Wei Huang 2024-04-18 10:33:56 +00:00 • committed by Joerg Roedel

parent 405e2f122b

commit 978d626b8f

2 changed files with 107 additions and 1 deletions

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8

drivers/iommu/amd/amd_iommu_types.h

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100

drivers/iommu/amd/ppr.c

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