[PATCH v6 01/10] iommu/generic_pt: Fix the RISC-V supported feature mask

From: fangyu . yu

Date: Sat Oct 31 2026 - 04:32:39 EST


From: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>

The RISC-V format advertises Svpbmt to its users, but omits the feature
from PT_SUPPORTED_FEATURES. Add it there so configurations which enable
Svpbmt pass generic page-table feature validation.

Fixes: f196a8668797 ("iommu/riscv: Advertise Svpbmt support to generic page table")
Signed-off-by: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>
Tested-by: Fangyu Yu <fangyu.yu@xxxxxxxxxxxxxxxxx>
Reviewed-by: Nutty Liu <nutty.liu@xxxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
---
drivers/iommu/generic_pt/fmt/iommu_riscv64.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/generic_pt/fmt/iommu_riscv64.c b/drivers/iommu/generic_pt/fmt/iommu_riscv64.c
index b18fc4d109f5..1bb74114fb02 100644
--- a/drivers/iommu/generic_pt/fmt/iommu_riscv64.c
+++ b/drivers/iommu/generic_pt/fmt/iommu_riscv64.c
@@ -7,7 +7,8 @@
#define PT_SUPPORTED_FEATURES \
(BIT(PT_FEAT_SIGN_EXTEND) | BIT(PT_FEAT_FLUSH_RANGE) | \
BIT(PT_FEAT_RISCV_SVNAPOT_64K) | \
- BIT(PT_FEAT_DETAILED_GATHER))
+ BIT(PT_FEAT_DETAILED_GATHER) | \
+ BIT(PT_FEAT_RISCV_SVPBMT))
#define PT_FORCE_ENABLED_FEATURES BIT(PT_FEAT_DETAILED_GATHER)

#include "iommu_template.h"
--
2.50.1