Re: [PATCH] x86/events/amd/iommu: Fix cpumask of IOMMU events

Vasant Hegde <[email protected]> Mon, 27 Jul 2026 16:08:24 +0530

Newsgroups	dev.linux.lists.iommu,org.kernel.vger.linux-kernel,org.kernel.vger.linux-perf-users
Message-ID	<[email protected]>

Hi,

On 5/17/2026 5:10 PM, Vasant Hegde wrote:
> IOMMU performance counters are accessed via MMIO space. Currently IOMMU
> PMUs uses a single global cpumask (iommu_cpumask) shared across all AMD
> IOMMU PMU instances. This prevents collecting per-socket numbers
> (ex: perf stat --per-socket).
> 
> Fix this by adjusting cpumask based on IOMMUs NUMA node.


Can you please review/pick this patch?

-Vasant