[PATCH v3 8/8] perf vendor events riscv:: Add support for spacemit,riscv-iommu HPM aliasing

[Conor Dooley]

On Wed, Feb 04, 2026 at 05:09:52PM +0800, Lv Zheng wrote:
> Add JSON HPM event aliases for SpacemiT distributed IOMMU (T100) which is
> general and compatible for all SpacemiT RISC-V SoCs.
> 
> Signed-off-by: Lv Zheng <lv.zheng at linux.spacemit.com>
> Signed-off-by: Jingyu Li <joey.li at spacemit.com>
> ---
>  MAINTAINERS                                   |   3 +
>  .../arch/riscv/spacemit/iommu/sys/ioatc.json  |  30 ++++
>  .../arch/riscv/spacemit/iommu/sys/ioats.json  | 163 ++++++++++++++++++
>  3 files changed, 196 insertions(+)
>  create mode 100644 tools/perf/pmu-events/arch/riscv/spacemit/iommu/sys/ioatc.json
>  create mode 100644 tools/perf/pmu-events/arch/riscv/spacemit/iommu/sys/ioats.json
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 7c50701b6001..4d91f99aa742 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22459,12 +22459,15 @@ K:	riscv
>  
>  RISC-V IOMMU
>  M:	Tomasz Jeznach <tjeznach at rivosinc.com>
> +M:	Lv Zheng <lv.zheng at linux.spacemit.com>
> +M:	Jingyu Li <joey.li at spacemit.com>

To be frank, this looks misguided, or at least premature, to me, given the
state of the patchset.

>  L:	iommu at lists.linux.dev
>  L:	linux-riscv at lists.infradead.org
>  S:	Maintained
>  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux.git
>  F:	Documentation/devicetree/bindings/iommu/riscv,iommu.yaml
>  F:	drivers/iommu/riscv/
> +F:	tools/perf/pmu-events/arch/riscv/spacemit/iommu/
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