From: Paolo Bonzini <pbonzini@redhat.com>
To: Waiman Long <Waiman.Long@hp.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Arnd Bergmann <arnd@arndb.de>,
Peter Zijlstra <peterz@infradead.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
Andi Kleen <andi@firstfloor.org>,
Michel Lespinasse <walken@google.com>,
Alok Kataria <akataria@vmware.com>,
linux-arch@vger.kernel.org, Gleb Natapov <gleb@redhat.com>,
x86@kernel.org, xen-devel@lists.xenproject.org,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Scott J Norton <scott.norton@hp.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Steven Rostedt <rostedt@goodmis.org>,
Chris Wright <chrisw@sous-sol.org>,
Oleg Nesterov <oleg@redhat.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Aswin Chandramouleeswaran <aswin@hp.com>,
Chegu Vinod <chegu_vinod@hp.com>,
linux-kernel@vger.kernel.org,
David Vrabel <david.vrabel@citrix.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH RFC v6 10/11] pvqspinlock, x86: Enable qspinlock PV support for KVM
Date: Thu, 13 Mar 2014 14:59:26 +0100 [thread overview]
Message-ID: <5321B9BE.7050209@redhat.com> (raw)
In-Reply-To: <1394650498-30118-11-git-send-email-Waiman.Long@hp.com>
Il 12/03/2014 19:54, Waiman Long ha scritto:
> @@ -807,8 +889,13 @@ void __init kvm_spinlock_init(void)
> if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
> return;
>
> +#ifdef CONFIG_QUEUE_SPINLOCK
> + pv_lock_ops.kick_cpu = kvm_kick_cpu_type;
> + pv_lock_ops.hibernate = kvm_hibernate;
> +#else
> pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning);
> pv_lock_ops.unlock_kick = kvm_unlock_kick;
> +#endif
This should also disable the unfair path.
Paolo
next parent reply other threads:[~2014-03-13 13:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1394650498-30118-1-git-send-email-Waiman.Long@hp.com>
[not found] ` <1394650498-30118-11-git-send-email-Waiman.Long@hp.com>
2014-03-13 13:59 ` Paolo Bonzini [this message]
[not found] ` <5322035B.5000205@hp.com>
[not found] ` <5322C0F7.2090604@redhat.com>
2014-03-17 17:47 ` [PATCH RFC v6 10/11] pvqspinlock, x86: Enable qspinlock PV support for KVM Waiman Long
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