Re: [Xen-devel] Questions about sh_prefetch and log_dirty

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 14:08 +0100 on 24 Jun (1245852490), David Knight wrote:
> Could it be possible that xen is in log_dirty_mode when a DomU is
> immigrating into it ?

No; and if it were it wouldn't matter since the domain being migrated
into isn't running.

Cheers,

Tim.

> >> I just want to make the faulted page and its following
> >> pages writable and marked as dirty after a write_protect
> >> page_fault. The function "sh_prebuild" is called in the
> >> sh_page_fault() right before sh_prefetch():
> >>
> >> ---------------sh_page_fault()-----------------
> >>
> >> if ( ( shadow_mode_log_dirty(v->domain) )
> >> && ( ft == ft_demand_write ) )
> >> sh_prebuild(.......);
> >>
> >> ..............
> >>
> >> I got problems when I migrate. The code can successfully
> >> migrate the domainU to another UNMODIFIED Xen. But when I
> >> migrate a domainU from UNMODIFIED Xen back to this MODIFIED
> >> Xen, the domU's clock is frozen, I use "xm console" to get
> >> in domU's console, but I just got about 6 TSC error messages
> >> and no other respond.
> >>
> >> I am using 32-bit PV domain, no-PSE.
> >> Does someone know any reasons? Thanks.
> >>
> >>
> >>
> >> _______________________________________________
> >> Xen-devel mailing list
> >> Xen-devel@xxxxxxxxxxxxxxxxxxx<mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx>
> >> http://lists.xensource.com/xen-devel
> >
> 
> 

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

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