Re: [PATCH] iommu/generic_pt: Fix the RISC-V supported feature mask
"Nutty.Liu" <[email protected]>
| Newsgroups | dev.linux.lists.iommu,org.infradead.lists.linux-riscv,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <SE3PR04MB892225C3EBCB09734BD2FD16F3A52@SE3PR04MB8922.apcprd04.prod.outlook.com> |
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 <[email protected]>
Reviewed-by: Nutty Liu <[email protected]>
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"