linux-kernel - Re: [PATCH 6/8] iommu/amd: Add support for nest parent domain allocation

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Message-ID: <20250902131247.GJ186519@nvidia.com>
Date: Tue, 2 Sep 2025 10:12:47 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Cc: nicolinc@...dia.com, linux-kernel@...r.kernel.org, robin.murphy@....com,
	will@...nel.org, joro@...tes.org, kevin.tian@...el.com,
	jsnitsel@...hat.com, vasant.hegde@....com, iommu@...ts.linux.dev,
	santosh.shukla@....com, sairaj.arunkodilkar@....com,
	jon.grimm@....com, prashanthpra@...gle.com, wvw@...gle.com,
	wnliu@...gle.com, gptran@...gle.com, kpsingh@...gle.com
Subject: Re: [PATCH 6/8] iommu/amd: Add support for nest parent domain
 allocation

On Wed, Aug 20, 2025 at 11:30:07AM +0000, Suravee Suthikulpanit wrote:
> @@ -2626,6 +2645,7 @@ amd_iommu_domain_alloc_paging_flags(struct device *dev, u32 flags,
>  		/* If nothing specific is required use the kernel commandline default */
>  		return do_iommu_domain_alloc(dev, 0, amd_iommu_pgtable);
>  	default:
> +		pr_err("%s: Unhandled flag : 0x%x\n", __func__, flags);

No prints triggerable by userspace! Remove them all!

Jason