iommu/riscv: Remove overflows on the invalidation path

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Since RISC-V supports a sign extended page table it should support
a gather->end of ULONG_MAX, but if this happens it will infinite loop
because of the overflow.

Also avoid overflow computing the length by moving the +1 to the other
side of the <

Fixes: 488ffbf181 ("iommu/riscv: Paging domain support")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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Jason Gunthorpe 2026-03-27 12:22:10 -03:00 • committed by Joerg Roedel

parent 553a127cb6

commit 40a13b4995

1 changed files with 6 additions and 5 deletions

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drivers/iommu/riscv/iommu.c

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