linux-kernel - Re: [RFC PATCH v2 01/10] iommu/riscv: add RISC-V IOMMU PMU support

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Date: Tue, 18 Jun 2024 09:14:49 +0800
From: Zong Li <zong.li@...ive.com>
To: Jason Gunthorpe <jgg@...pe.ca>
Cc: joro@...tes.org, will@...nel.org, robin.murphy@....com, 
	tjeznach@...osinc.com, paul.walmsley@...ive.com, palmer@...belt.com, 
	aou@...s.berkeley.edu, kevin.tian@...el.com, linux-kernel@...r.kernel.org, 
	iommu@...ts.linux.dev, linux-riscv@...ts.infradead.org
Subject: Re: [RFC PATCH v2 01/10] iommu/riscv: add RISC-V IOMMU PMU support

On Mon, Jun 17, 2024 at 10:55 PM Jason Gunthorpe <jgg@...pe.ca> wrote:
>
> On Fri, Jun 14, 2024 at 10:21:47PM +0800, Zong Li wrote:
> > This patch implements the RISC-V IOMMU hardware performance monitor, it
> > includes the counting ans sampling mode.
> >
> > Specification doesn't define the event ID for counting the number of
> > clock cycles, there is no associated iohpmevt0. But we need an event for
> > counting cycle in perf, reserve the maximum number of event ID for it now.
>
> Why is this part of the nesting series?

As you mentioned, it should be a separate patch set, let me submit it
individually in the next version. Thanks

>
> Jason