Re: [Xen-ia64-devel] Destroy VTI domain would cause Xen crashing in latest changeset 15557

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

It seems that commenting out the following line will fix.
But I haven't confirmed/tested it.

in vmx_init.c
static void vmx_release_assist_channel(struct vcpu *v)
{
-        free_xen_event_channel(v, v->arch.arch_vmx.xen_port);
+        //free_xen_event_channel(v, v->arch.arch_vmx.xen_port);
}

See also in xen/arch/x86/hvm/hvm.c
void hvm_vcpu_destroy(struct vcpu *v)
{
    vlapic_destroy(v);
    hvm_funcs.vcpu_destroy(v);

    /* Event channel is already freed by evtchn_destroy(). */
    /*free_xen_event_channel(v, v->arch.hvm_vcpu.xen_port);*/
}

and common/domain.c
void domain_kill(struct domain *d)
...
    evtchn_destroy(d);
    gnttab_release_mappings(d);
    domain_relinquish_resources(d);
        ...
        => calls vmx_reelase_assist_channel()

thanks,


On Tue, Jul 10, 2007 at 07:53:40PM -0600, Alex Williamson wrote:
> On Wed, 2007-07-11 at 09:06 +0800, You, Yongkang wrote:
> > Hi Alex and all,
> > 
> >  
> > 
> > Our nightly testing system report last night testing met Xen crashing.
> > The problem changeset would before 15556. I think the issue was
> > brought in by 32 side’s codes. 
> 
>    Yes, I saw the same problem.  I filed bugzilla 1021 for it:
> 
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1021
> 
> This changeset looked like a likely candidate for where it might have
> broken:
> 
> http://xenbits.xensource.com/xen-unstable.hg?rev/9fa9346e1c70
> 
> Hopefully someone can debug and submit a fix.  Thanks,
> 
>       Alex
> 
> -- 
> Alex Williamson                             HP Open Source & Linux Org.
> 
> 
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> 

-- 
yamahata

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