Re: [Xen-devel] how does variable num define for errno in libxc

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 12:11 +0100 on 19 Mar (1205928715), Daniel Stodden wrote:
> >  another question
> >  i am confused about how to use shadow mechanism ,that is, when live 
> > migration, after shutdown VM,and XEN_DOMCTL_SHADOW_OP_CLEAN, how to make VM 
> >  
> >  remain in shadow mode XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY?  i have 
> > modified the code to try to make it as follows
> >             if ( !(xc_shadow_control(xc_handle, dom, 
> > XEN_DOMCTL_SHADOW_OP_OFF,
> >                                      NULL, 0, NULL, 0, NULL) >= 0 &&
> >                    xc_shadow_control(xc_handle, dom,
> >                                      XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY,
> >                                      NULL, 0, NULL, 0, NULL) >= 0) )

If the domain is already in shadow log-dirty mode, and you want it to
remain in shadow log-dirty mode, surely you don't need to do anything at
all?

Cheers,

Tim.
 
-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Citrix Systems (R&D) Ltd.
[Company #02300071, SL9 0DZ, UK.]

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel