iommu/riscv: Advertise Svpbmt support to generic page table

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The RISC-V IOMMU can optionally support Svpbmt page-based memory types
in its page table format. When present,the generic page table code can
use this capability to encode memory attributes (e.g. MMIO vs normal
memory) in PTEs.

Signed-off-by: Fangyu Yu <fangyu.yu@linux.alibaba.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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Fangyu Yu 2026-04-17 22:07:45 +08:00 • committed by Joerg Roedel

parent 5d6919055d

commit f196a86687

2 changed files with 6 additions and 0 deletions

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2

drivers/iommu/riscv/iommu.c

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4

include/linux/generic_pt/common.h

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