Re: [Xen-ia64-devel][PATCH][VTD][dom0] dom0 vtd patch

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

On Thu, Oct 23, 2008 at 02:14:52PM +0800, Xu, Anthony wrote:
> Isaku Yamahata wrote:
> > On Wed, Oct 22, 2008 at 05:43:13PM +0800, Xu, Anthony wrote:
> >> dom0/ia64/vtd patch
> >>
> >> Signed-off-by: Anthony Xu <anthony.xu@xxxxxxxxx>
> >
> >
> > In XEN_DOMCTL_get_device_group case.
> >
> >
> > struct xen_domctl_get_device_group {
> >     uint32_t  machine_bdf;      /* IN */
> >     uint32_t  max_sdevs;        /* IN */
> >     uint32_t  num_sdevs;        /* OUT */
> >     XEN_GUEST_HANDLE_64(uint32)  sdev_array;   /* OUT */
> > };
> >
> > XEN_DOMCTL_get_device_group is used by libxc.
> > sdev_array needs ot be handled correctly.
> 
> I guess you are talking about xencomm,
> I don't know how to handle it.
> Can you enlighten me?

How about this?


[IA64] xencomm: support several domctls for VT-d.

This patch adds xencomm support of several domctl hypercalls
for VT-d.

Signed-off-by: Anthony Xu <anthony.xu@xxxxxxxxx>
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r c87adc976013 arch/ia64/xen/xcom_privcmd.c
--- a/arch/ia64/xen/xcom_privcmd.c      Mon Oct 20 15:29:07 2008 +0100
+++ b/arch/ia64/xen/xcom_privcmd.c      Fri Oct 24 11:22:02 2008 +0900
@@ -340,6 +340,20 @@
                        return -ENOMEM;
                set_xen_guest_handle(kern_op.u.hvmcontext.buffer, (void*)desc);
                break;
+       case XEN_DOMCTL_get_device_group: 
+       {
+               struct xen_domctl_get_device_group *get_device_group =
+                       &kern_op.u.get_device_group;
+               desc = xencomm_map(
+                       xen_guest_handle(get_device_group->sdev_array),
+                       get_device_group->max_sdevs * sizeof(uint32_t));
+               if (xen_guest_handle(get_device_group->sdev_array) != NULL &&
+                   get_device_group->max_sdevs > 0 && desc == NULL)
+                       return -ENOMEM;
+               set_xen_guest_handle(kern_op.u.get_device_group.sdev_array,
+                                    (void*)desc);
+               break;
+       }
        case XEN_DOMCTL_max_vcpus:
        case XEN_DOMCTL_scheduler_op:
        case XEN_DOMCTL_setdomainhandle:
@@ -354,6 +368,12 @@
        case XEN_DOMCTL_set_opt_feature:
        case XEN_DOMCTL_assign_device:
        case XEN_DOMCTL_subscribe:
+       case XEN_DOMCTL_test_assign_device:
+       case XEN_DOMCTL_deassign_device:
+       case XEN_DOMCTL_bind_pt_irq:
+       case XEN_DOMCTL_unbind_pt_irq:
+       case XEN_DOMCTL_memory_mapping:
+       case XEN_DOMCTL_ioport_mapping:
                break;
        case XEN_DOMCTL_pin_mem_cacheattr:
                return -ENOSYS;



-- 
yamahata

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