linux-kernel - Re: [PATCH v8 00/11] Enable haltpoll on arm64

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Message-ID: <87y11x5xeo.fsf@oracle.com>
Date: Tue, 05 Nov 2024 10:49:03 -0800
From: Ankur Arora <ankur.a.arora@...cle.com>
To: Haris Okanovic <harisokn@...zon.com>
Cc: ankur.a.arora@...cle.com, catalin.marinas@....com,
        linux-pm@...r.kernel.org, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        will@...nel.org, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
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        joao.m.martins@...cle.com, boris.ostrovsky@...cle.com,
        konrad.wilk@...cle.com
Subject: Re: [PATCH v8 00/11] Enable haltpoll on arm64


Haris Okanovic <harisokn@...zon.com> writes:

> Hi Ankur, Catalin,
>
> How about the following series based on a refactor of arm64's delay()?
> Does it address your earlier concerns?
>
> delay() already implements wfet() and falls back to wfe() w/ evstream
> or a cpu_relax loop. I refactored it to poll an address, and wrapped in
> a new platform-agnostic smp_vcond_load_relaxed() macro. More details in
> the following commit log.

Haven't looked at your series too closely but it looks quite a bit
different from the version I was working on.

Let me send out my version as well in the next few days.

--
ankur