[External] Re: [RFC 00/12] riscv: Introduce Pseudo NMI

[Thomas Gleixner]

On Thu, Oct 26 2023 at 21:56, Xu Lu wrote:
> On Thu, Oct 26, 2023 at 7:02 AM Atish Patra <atishp at atishpatra.org> wrote:
> First, please allow me to explain that CSR_IE Pseudo NMI actually can support
> more than PMU profiling. For example, if we choose to make external major
> interrupt as NMI and use ithreshold or eithreshold in AIA to control which minor
> external interrupts can be sent to CPU, then we actually can support multiple
> minor interrupts as NMI while keeping the other minor interrupts still
> normal irqs.

What is the use case for these NMIs? Anything else than profiling is not
really possible in NMI context at all.

Thanks,

        tglx