linux-kernel - RE: [PATCH v5 2/2] hyperv-fb: kick off efifb early

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Message-ID: <7f41262bad3c4043bded61abc759dac7@DFM-DB3MBX15-06.exchange.corp.microsoft.com>
Date:	Wed, 26 Feb 2014 15:43:41 +0000
From:	Haiyang Zhang <haiyangz@...rosoft.com>
To:	Gerd Hoffmann <kraxel@...hat.com>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	KY Srinivasan <kys@...rosoft.com>,
	"Abhishek Gupta (LIS)" <abgupta@...rosoft.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"tomi.valkeinen@...com" <tomi.valkeinen@...com>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Subject: RE: [PATCH v5 2/2] hyperv-fb: kick off efifb early



> -----Original Message-----
> From: Gerd Hoffmann [mailto:kraxel@...hat.com]
> Sent: Wednesday, February 26, 2014 5:51 AM
> To: linux-fbdev@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org; gregkh@...uxfoundation.org; KY Srinivasan;
> Abhishek Gupta (LIS); Haiyang Zhang; jasowang@...hat.com;
> tomi.valkeinen@...com; devel@...uxdriverproject.org; Gerd Hoffmann; Jean-
> Christophe Plagniol-Villard
> Subject: [PATCH v5 2/2] hyperv-fb: kick off efifb early
> 
> Remove firmware framebuffer before initializing hyperv-fb.  Needed
> on gen2 virtual machines.   Letting register_framebuffer handle the
> switchover results in efifb still being active while hyperv graphics
> are initialized, which in turn can make the linux kernel hang.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>

Thank you!

Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>

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