Re: [PATCH v4 1/5] docs: IOMMU user API

From: Lu Baolu
Date: Wed Jul 08 2020 - 20:49:11 EST


Hi Jacob,

On 7/8/20 11:29 PM, Jacob Pan wrote:
On Wed, 8 Jul 2020 10:07:13 +0800
Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> wrote:

Hi,

On 7/8/20 7:43 AM, Jacob Pan wrote:
+For UAPIs that are shared with in-kernel users, a wrapper function
+is provided to distinguish the callers. For example,
+
+Userspace caller ::
+
+ int iommu_sva_unbind_gpasid(struct iommu_domain *domain, struct
device *dev,
+ void __user *udata)
+
+In-kernel caller ::
+
+ int __iommu_sva_unbind_gpasid(struct iommu_domain *domain,
struct device *dev,
+ struct iommu_gpasid_bind_data *data)

iommu_page_response() may have the same needs. Can we reach an
agreement on the naming rules?

Yes iommu_page_response() also has to deal with in-kernel and UAPI
callers. I left it out because I thought the current VFIO and SVA common
code is not ready for PRQ yet, I might be reading old news :) argsz
need to be handled as well.

Perhaps we can wait until this set is settled? Do you have a suggestion
on the naming rules?

I have no suggestion on the naming rules, just wanted to check whether
others have any preference. I agree that we can wait until this series
is settled.

Best regards,
baolu