On 2022/5/12 下午7:32, Jason Gunthorpe via iommu wrote:
On Thu, May 12, 2022 at 03:07:09PM +0800, Zhangfei Gao wrote:
I can't help feeling a little wary about removing this until IOMMUFD
can actually offer a functional replacement - is it in the way of
anything upcoming?
From an upstream perspective if someone has a patched kernel to
complete the feature, then they can patch this part in as well, we
should not carry dead code like this in the kernel and in the uapi.
It is not directly in the way, but this needs to get done at some
point, I'd rather just get it out of the way.
We are using this interface for nested mode.
How are you using it? It doesn't do anything. Do you have out of tree
patches as well?
Yes, there are some patches out of tree, since they are pending for
almost one year.
By the way, I am trying to test nesting mode based on iommufd, still
requires iommu_enable_nesting,
which is removed in this patch as well.
So can we wait for alternative patch then remove them?
Thanks
