iommu/amd: Modify set_dte_entry() to use 256-bit DTE helpers

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Also, the set_dte_entry() is used to program several DTE fields (e.g.
stage1 table, stage2 table, domain id, and etc.), which is difficult
to keep track with current implementation.

Therefore, separate logic for clearing DTE (i.e. make_clear_dte) and
another function for setting up the GCR3 Table Root Pointer, GIOV, GV,
GLX, and GuestPagingMode into another function set_dte_gcr3_table().

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20241118054937.5203-6-suravee.suthikulpanit@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Suravee Suthikulpanit 2024-11-18 05:49:33 +00:00 • committed by Joerg Roedel

parent 8b3f787338

commit fd5dff9de4

4 changed files with 106 additions and 68 deletions

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2

drivers/iommu/amd/amd_iommu.h

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13

drivers/iommu/amd/amd_iommu_types.h

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drivers/iommu/amd/init.c

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drivers/iommu/amd/iommu.c

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