From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jonathan Nieder <jrnieder@gmail.com>
Subject: Re: [regression] KVM: hangs and "irq timeout" booting HURD unless
 -no-kvm-irqchip passed
Date: Mon, 7 Feb 2011 19:40:55 -0600
Message-ID: <20110208014032.GB1858@elie>
References: <1283171743-10766-1-git-send-email-avi@redhat.com>
 <1283171743-10766-2-git-send-email-avi@redhat.com>
 <20110207060030.GA1896@elie>
 <4D4FE7E5.2040308@redhat.com>
 <20110207124513.GB14984@redhat.com>
 <20110207132729.GC14984@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>,
	kvm@vger.kernel.org, Michael Tokarev <mjt@tls.msk.ru>,
	Guillem Jover <guillem@debian.org>
To: Gleb Natapov <gleb@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mail-gw0-f46.google.com ([74.125.83.46]:47271 "EHLO
	mail-gw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752594Ab1BHBlE (ORCPT <rfc822;kvm@vger.kernel.org>);
	Mon, 7 Feb 2011 20:41:04 -0500
Received: by gwj20 with SMTP id 20so2003306gwj.19
        for <kvm@vger.kernel.org>; Mon, 07 Feb 2011 17:41:03 -0800 (PST)
Content-Disposition: inline
In-Reply-To: <20110207132729.GC14984@redhat.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

Gleb Natapov wrote:

> Is this patch helps?
> 
> diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
> index 3cece05..62b1dde 100644
> --- a/arch/x86/kvm/i8259.c
> +++ b/arch/x86/kvm/i8259.c
> @@ -549,6 +549,9 @@ static void pic_irq_request(struct kvm *kvm, int level)
>  	struct kvm_pic *s = pic_irqchip(kvm);
>  	int irq = pic_get_irq(&s->pics[0]);
>  
> +	if (s->output && !level)
> +		s->pics[0].isr_ack = 0xff;
> +

Yes, it does (tested on top of kvm/master).  Thanks!