Re: [PATCH] iommu/generic_pt: Fix the RISC-V supported feature mask

[Nutty.Liu]

On 8/18/2026 5:24 PM, Andrew Jones wrote:
> 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>
Reviewed-by: Nutty Liu <nutty.liu@xxxxxxxxxxx>

Thanks,
Nutty
> ---
>   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"