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Re: [Xen-devel] Re: [GIT PULL] pv/fbfront

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [GIT PULL] pv/fbfront
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Date: Tue, 2 Mar 2010 16:56:47 -0500
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On Tue, Mar 02, 2010 at 12:03:03PM -0800, Jeremy Fitzhardinge wrote:
> On 03/01/2010 07:01 PM, Konrad Rzeszutek Wilk wrote:
>> Hey Jeremy,
>> Please pull from:
>> git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git pv/fbfront
>> It has fixes that made it in v2.6.33 for the Xen Frame buffer:
>>   xen pvfb: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
>>   fb-defio: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
>>   fb-defio: If FBINFO_VIRTFB is defined, do not set VM_IO flag.
>>   drivers/video/broadsheetfb.c |    2 +-
>>   drivers/video/fb_defio.c     |    4 +++-
>>   drivers/video/hecubafb.c     |    2 +-
>>   drivers/video/metronomefb.c  |    2 +-
>>   drivers/video/xen-fbfront.c  |    2 +-
>>   include/linux/fb.h           |    1 +
>>   6 files changed, 8 insertions(+), 5 deletions(-)
>> Or perhaps we should ask Greg KH to put those fixes on his stable tree
>> and then you would merge them from him?
> I've merged it anyway.  I'm not sure they're stable material because the  
> bug they fix only manifests when there's dom0 support in the kernel, I  
> think.  Does plain 2.6.32 show problems with pvfb?

No. But xen/stable does. Without those patches virgin xen/stable boots,
but on Dom0 console I see:

(XEN) mm.c:859:d1008 Error getting mfn 1c1f5 (pfn 5555555555555555) from
L1 entry 800000001c1f5467 for l1e_owner=1008, pg_owner=3273

these forever.
> BTW, I can't get absolute (tablet) mode working with pvfb any more.   
> Have you noticed that?

Noted. Haven't played with that - I just boot up tiny guests (20MB or
so) that can simple stuff. I will look in this.

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