Messages in this thread | | | From | Suravee Suthikulpanit <> | Subject | [PATCH 0/3] iommu/amd: Fix unable to handle page fault due to AVIC | Date | Fri, 20 Aug 2021 15:29:54 -0500 |
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This bug is triggered when rebooting VM on a system which SVM AVIC is enabled but IOMMU AVIC is disabled in the BIOS.
The series reworks interrupt remapping intialiation to check for IOMMU AVIC support (GAMSup) at earlier stage using EFR provided by IVRS table instead of the PCI MMIO register, which is available after PCI support for IOMMU is initialized. This helps avoid having to disable and clean up the already initialized interrupt-remapping-related parameter.
Thanks, Suravee
Suravee Suthikulpanit (2): iommu/amd: Introduce helper function to check feature bit on all IOMMUs iommu/amd: Remove iommu_init_ga()
Wei Huang (1): iommu/amd: Relocate GAMSup check to early_enable_iommus
drivers/iommu/amd/init.c | 45 ++++++++++++++++++++++------------------ 1 file changed, 25 insertions(+), 20 deletions(-)
-- 2.17.1
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