Re: [PATCH v4 0/4] arm64: cross-CPU NMI via SDEI

[Kiryl Shutsemau]

On Mon, Jun 29, 2026 at 05:53:57PM +0100, Kiryl Shutsemau wrote:
> On Mon, Jun 29, 2026 at 04:54:18PM +0100, Catalin Marinas wrote:
> > Have you tried SDEI_EVENT_COMPLETE_AND_RESUME instead? Just COMPLETE
> > won't return to the kernel. We have sdei_handler_abort() to complete the
> > event and, hopefully, you can continue with the CPU_OFF. It's a work
> > around the TF-A non-compliance but I think this is useful even if you
> > don't issue the CPU_OFF (e.g. no CPU hotplug, just the park loop).
> 
> Tried it. The result is the opposite of what I expected, and it argues
> against doing the complete at all under QEMU's TF-A.

I have to walk back on this. My test setup was broken. I will be back to
you with proper data.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov