Re: [PATCH v2 00/14] Introducing TIF_NOTIFY_IPI flag

Russell King (Oracle)
2024-06-15T14:27:22Z

On Thu, Jun 13, 2024 at 06:15:59PM +0000, K Prateek Nayak wrote:
> o Dropping the ARM results since I never got my hands on the ARM64
> system I used in my last testing. If I do manage to get my hands on it
> again, I'll rerun the experiments and share the results on the thread.
> To test the case where TIF_NOTIFY_IPI is not enabled for a particular
> architecture, I applied the series only until Patch 3 and tested the
> same on my x86 machine with a WARN_ON_ONCE() in do_idle() to check if
> tif_notify_ipi() ever return true and then repeated the same with
> Patch 4 applied.

Confused. ARM (32-bit) or ARM64? You patch 32-bit ARM, but you don't
touch 64-bit Arm. "ARM" on its own in the context above to me suggests
32-bit, since you refer to ARM64 later.

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