Re: [PATCH v4 01/16] perf/x86/intel: Add x86_pmu.pebs_vmx for Ice Lake Servers

[Andi Kleen]

> The reason why soft lockup happens may be the unmapped EPT pages. So, do we
> have a way to map all gpa
> before we use pebs on Skylake?

Can you configure a VT-d device, that will implicitly pin all pages for the
IOMMU. I *think* that should be enough for testing.

-Andi