[PATCH v3 3/8] iommu/riscv: Add HPM support for performance monitoring

[Andrew Jones]

On Fri, Feb 06, 2026 at 11:42:39AM +0800, Lv Zheng wrote:
> On 2/5/2026 11:23 PM, Andrew Jones wrote:
...
> > Since Zong Li's patches were already on the list then your serieswould> at
> least discuss them in the cover letter, explaining why you've opted
> > not to adopt them. But, most likely some of the patches can be adopted,
> > so those should be extracted from Zong Li's work (with authorship
> > preserved) and based upon in order to respect that prior work.
> > 
> 
> You can see we have contacted each other in community, and decided to
> cooperate in this way to honor his contribution. But final decision is
> left for the community to decide:
> 
> From Zong Li:
> >> Of course, if the community would prefer to go your version, I’m
> >> perfectly fine with that as well.
> 
> We respect all contributions, We'll add the link in cover letter to the
> follow-up revisions, let me know if anything else should be done to the
> new revisions.

Just do all the communication before posting, allowing that communication
to be summarized in the cover letter and in any appropriate commit
messages so reviewers know what's going on. Also don't forget to CC
anybody previously involved to ensure they have a chance to chime in.

> 
> --------------------------------------------------------------------
> 
> And let me describe in details to compare the functionalities and
> addressed comments between what is provided by Joey and by Zong:
> 
> https://lore.kernel.org/all/20250115030306.29735-1-zong.li@sifive.com/
> 
> There is no missing functionalities between the two approaches, I also
> checked the original Robin's comments, let me describe them in details:

My concern wasn't whether or not Robin's comments were addressed in this
posting (that's important, but not what I'm talking about). My concern
was that Zong Li's work wasn't addressed in any way, so appeared to be
a chance for duplicated efforts. Indeed his reply [1] indicates exactly
that and even that there is a third patch series being worked
independently. Please work out who and what patches are going to be
the focus going forward and describe that decision in the cover letter
for the next revision. And please don't forget to CC Zong Li and Yaxing
Guo.

[1] https://lore.kernel.org/all/CANXhq0oi9nE7ffLGsz5j8GnC1UDTD-4bE4cantRjW2fXHYrjHA@mail.gmail.com/

Thanks,
drew