Re: [Xen-devel] help: /dev/xen/gntdev

[Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>]

Forgot to mention, rebuilding dom0 with gntdev (CONFIG_XEN_GRANT_DEV)
resolved the issue. Thanks Jan. 

Mukesh


On Fri, 12 Feb 2010 09:50:59 +0000
"Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:

> Do you have the gntdev driver loaded (or built into your kernel)?
> 
> Jan
> 
> >>> Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> 12.02.10 05:11 >>>
> Hi
> 
> I'm trying to upgrade my environment from xen 3.4.0 to xen 4.0 via
> rpm that fits in our product. I installed new tools and xen, and it
> looks like I am missing a step.
> 
> In 4.0 qemu DEVOPS_FLAG_NEED_GNTDEV was added to xen_console_ops. This
> results in xc_gnttab_open() being called which calls
> xc_find_device_number() to get device nums for /dev/xen/gntdev so it
> can mknod. xc_find_device_number() is failing because there is no
> entry in the the sysfs.
> 
> So, can someone please advise how the entry is created in the sysfs?
> The exact path it's looking: /sys/class/misc/gntdev/dev
> 
> 
> thanks,
> Mukesh
> 
> 
> 
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