[Xen-devel] How to turn off persistent grant in xen

[HANNAS YAYA Issa <issa.hannasyaya@xxxxxxxxxxx>]

Hi
I want to disable persistent grant in xen. I tried to use xenbus to 
disable it. What I did is modifying this line in 
drivers/block/xenblkback/xenbus.c:
791	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u", 
1);

and put this

791	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u", 
0);
but the problem is my domain crash.

I think it is not the only thing to do in order to disable persistent 
grant.
Please can you help me.

Thank you

HANNAS

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