linux-kernel - Re: [PATCH v3 5/6] powerpc/pseries: implement paravirt qspinlocks for SPLPAR

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Message-ID: <20200723140011.GR5523@worktop.programming.kicks-ass.net>
Date:   Thu, 23 Jul 2020 16:00:11 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        linuxppc-dev@...ts.ozlabs.org, Will Deacon <will@...nel.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Ingo Molnar <mingo@...hat.com>,
        Anton Blanchard <anton@...abs.org>,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kvm-ppc@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: Re: [PATCH v3 5/6] powerpc/pseries: implement paravirt qspinlocks
 for SPLPAR

On Thu, Jul 09, 2020 at 12:06:13PM -0400, Waiman Long wrote:
> We don't really need to do a pv_spinlocks_init() if pv_kick() isn't
> supported.

Waiman, if you cannot explain how not having kick is a sane thing, what
are you saying here?