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From: Joe Jin <joe.jin@oracle.com>
To: Joe Jin <joe.jin@oracle.com>
Cc: Ian Campbell <Ian.Campbell@eu.citrix.com>,
	"jeremy@goop.org" <jeremy@goop.org>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	"gurudas.pai@oracle.com" <gurudas.pai@oracle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	"guru.anbalagane@oracle.com" <guru.anbalagane@oracle.com>,
	"greg.marsden@oracle.com" <greg.marsden@oracle.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Xen-devel] Re: [patch] xenfb: fix xenfb suspend/resume race
Date: Fri, 07 Jan 2011 06:43:20 +0000	[thread overview]
Message-ID: <4D26B608.2060500@oracle.com> (raw)
In-Reply-To: <4D2579F1.50900@oracle.com>

On 01/06/11 16:14, Joe Jin wrote:
> 
>>
>> No, it papers over the issue, the code should never have been allowed to
>> get this far if the connection to the backend is not yet fully resumed
>> (i.e. when irq = -1).
>>
>> The call to xenfb_send_event should have been gated further up the call
>> chain, AFAICT by the check of info->update_wanted in xenfb_refresh. This
>> suggests that the correct fix is to set info->update_wanted = 0 in
>> xenfb_resume.
>>
>> I said all this in my previous mail and you ignored it. Did you try this
>> approach?
> 

Disable xenfb refresh flag before suspend will fix this issue, sent new patch
to you by another mail, please review it.

Thanks,
Joe

WARNING: multiple messages have this Message-ID (diff)
From: Joe Jin <joe.jin@oracle.com>
To: Joe Jin <joe.jin@oracle.com>
Cc: Ian Campbell <Ian.Campbell@eu.citrix.com>,
	"jeremy@goop.org" <jeremy@goop.org>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	"gurudas.pai@oracle.com" <gurudas.pai@oracle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	"guru.anbalagane@oracle.com" <guru.anbalagane@oracle.com>,
	"greg.marsden@oracle.com" <greg.marsden@oracle.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Xen-devel] Re: [patch] xenfb: fix xenfb suspend/resume race
Date: Fri, 07 Jan 2011 14:43:20 +0800	[thread overview]
Message-ID: <4D26B608.2060500@oracle.com> (raw)
In-Reply-To: <4D2579F1.50900@oracle.com>

On 01/06/11 16:14, Joe Jin wrote:
> 
>>
>> No, it papers over the issue, the code should never have been allowed to
>> get this far if the connection to the backend is not yet fully resumed
>> (i.e. when irq == -1).
>>
>> The call to xenfb_send_event should have been gated further up the call
>> chain, AFAICT by the check of info->update_wanted in xenfb_refresh. This
>> suggests that the correct fix is to set info->update_wanted = 0 in
>> xenfb_resume.
>>
>> I said all this in my previous mail and you ignored it. Did you try this
>> approach?
> 

Disable xenfb refresh flag before suspend will fix this issue, sent new patch
to you by another mail, please review it.

Thanks,
Joe

  reply	other threads:[~2011-01-07  6:43 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-30 12:56 [patch] xenfb: fix xenfb suspend/resume race Joe Jin
2010-12-30 12:56 ` Joe Jin
2010-12-30 16:40 ` Konrad Rzeszutek Wilk
2010-12-30 16:40   ` Konrad Rzeszutek Wilk
2010-12-30 16:40   ` Konrad Rzeszutek Wilk
2010-12-31  0:56   ` Joe Jin
2010-12-31  0:56     ` Joe Jin
2011-01-03 16:34     ` [Xen-devel] " Konrad Rzeszutek Wilk
2011-01-03 16:34       ` Konrad Rzeszutek Wilk
2011-01-04  0:34       ` Joe Jin
2011-01-04  0:34         ` Joe Jin
2011-01-04 11:15   ` Ian Campbell
2011-01-04 11:15     ` Ian Campbell
2011-01-06  7:14     ` Joe Jin
2011-01-06  7:14       ` Joe Jin
2011-01-06  8:02       ` Ian Campbell
2011-01-06  8:02         ` Ian Campbell
2011-01-06  8:14         ` Joe Jin
2011-01-06  8:14           ` Joe Jin
2011-01-07  6:43           ` Joe Jin [this message]
2011-01-07  6:43             ` [Xen-devel] " Joe Jin
2011-01-06  8:47         ` Ian Campbell
2011-01-06  8:47           ` Ian Campbell

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