[RFC PATCH v2 01/10] iommupt: Add RISC-V Second-stage (iohgatp) page table support

[Andrew Jones]

On Thu, May 07, 2026 at 07:36:57PM +0800, fangyu.yu at linux.alibaba.com wrote:
...
> diff --git a/include/linux/generic_pt/common.h b/include/linux/generic_pt/common.h
> index fc5d0b5edadc..59448125159e 100644
> --- a/include/linux/generic_pt/common.h
> +++ b/include/linux/generic_pt/common.h
> @@ -188,7 +188,10 @@ enum {
>  	 * Support the 64k contiguous page size following the Svnapot extension.
>  	 */
>  	PT_FEAT_RISCV_SVNAPOT_64K = PT_FEAT_FMT_START,
> -
> +	/*
> +	 * Using second-stage / iohgatp address translation.
> +	 */
> +	PT_FEAT_RISCV_S2,

Hi Fangyu,

I just sent [1], but I actually discovered that issue when testing this
patch and finding PT_FEAT_RISCV_S2 was missing from PT_SUPPORTED_FEATURES.
So this patch needs the same fix as [1] as well.

Thanks,
drew

[1] https://lore.kernel.org/all/20260818092444.42755-1-andrew.jones@oss.qualcomm.com/