Re: [PATCH v3 18/19] iommu/amd: Print access/dirty bits if supported

Suthikulpanit, Suravee
2023-10-17T03:48:37Z

On 9/23/2023 8:25 AM, Joao Martins wrote:
> Print the feature, much like other kernel-supported features.
>
> One can still probe its actual hw support via sysfs, regardless
> of what the kernel does.
>
> Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
> ---
> drivers/iommu/amd/init.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
> index 45efb7e5d725..b091a3d10819 100644
> --- a/drivers/iommu/amd/init.c
> +++ b/drivers/iommu/amd/init.c
> @@ -2208,6 +2208,10 @@ static void print_iommu_info(void)
>
> if (iommu->features & FEATURE_GAM_VAPIC)
> pr_cont(" GA_vAPIC");
> + if (iommu->features & FEATURE_HASUP)
> + pr_cont(" HASup");
> + if (iommu->features & FEATURE_HDSUP)
> + pr_cont(" HDSup");
>
> if (iommu->features & FEATURE_SNP)
> pr_cont(" SNP");

Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>

Thanks,
Suravee