From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoffer Dall <christoffer.dall@linaro.org>
Subject: Re: [PATCH 01/10] arm/arm64: KVM: Fix ordering of timer/GIC on guest
 entry
Date: Tue, 30 Jun 2015 22:19:11 +0200
Message-ID: <20150630201911.GY11332@cbox>
References: <1433783045-8002-1-git-send-email-marc.zyngier@arm.com>
 <1433783045-8002-2-git-send-email-marc.zyngier@arm.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org,
	Eric Auger <eric.auger@linaro.org>,
	Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>,
	Andre Przywara <andre.przywara@arm.com>
To: Marc Zyngier <marc.zyngier@arm.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mail-la0-f50.google.com ([209.85.215.50]:35206 "EHLO
	mail-la0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751378AbbF3UTM (ORCPT <rfc822;kvm@vger.kernel.org>);
	Tue, 30 Jun 2015 16:19:12 -0400
Received: by lagh6 with SMTP id h6so27375316lag.2
        for <kvm@vger.kernel.org>; Tue, 30 Jun 2015 13:19:10 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <1433783045-8002-2-git-send-email-marc.zyngier@arm.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On Mon, Jun 08, 2015 at 06:03:56PM +0100, Marc Zyngier wrote:
> As we now inject the timer interrupt when we're about to enter
> the guest, it makes a lot more sense to make sure this happens
> before the vgic code queues the pending interrupts.
> 
> Otherwise, we get the interrupt on the following exit, which is
> not great for latency (and leads to all kind of bizarre issues
> when using with active interrupts at the HW level).
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>