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Subject: Re: [PATCH] x86, locking/spinlocks: Remove
 paravirt_ticketlocks_enabled
To: Waiman Long <longman@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>
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Cc: linux-arch@vger.kernel.org, x86@kernel.org,
        linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
        xen-devel@lists.xenproject.org, kvm@vger.kernel.org,
        Paolo Bonzini <pbonzini@redhat.com>,
        =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Jeremy Fitzhardinge <jeremy@goop.org>,
        Chris Wright <chrisw@sous-sol.org>, Alok Kataria <akataria@vmware.com>,
        Rusty Russell <rusty@rustcorp.com.au>, Juergen Gross <jgross@suse.com>
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Message-ID: <a8aecbb1-edb8-fb31-885d-1a84ff134934@oracle.com>
Date: Thu, 12 Jan 2017 15:03:39 -0500
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> diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
> index e8a9ea7..a822606 100644
> --- a/arch/x86/xen/spinlock.c
> +++ b/arch/x86/xen/spinlock.c
> @@ -155,7 +155,6 @@ static __init int xen_init_spinlocks_jump(void)
>  	if (!xen_domain())
>  		return 0;
>  
> -	static_key_slow_inc(&paravirt_ticketlocks_enabled);
>  	return 0;
>  }
>  early_initcall(xen_init_spinlocks_jump);


Looks that with this change there is not much left of
xen_init_spinlocks_jump() and so it can be removed.

-boris