On Tue, Jan 26, 2010 at 11:34:28PM -0700, Jim Fehlig wrote:
> xen-unstable c/s 20762 bumped XEN_SYSCTL_INTERFACE_VERSION to 7. I
> don't see how the interface change affects libvirt, other than failing
> xenHypervisorInit() since version 7 is not tried.
>
> The attached patch accommodates the upcoming Xen 4.0 release by checking
> for XEN_SYSCTL_INTERFACE_VERSION 7. If found, it sets
> XEN_DOMCTL_INTERFACE_VERSION to 6, which is also new to Xen 4.0.
>
> Regards,
> Jim
> Index: libvirt-0.7.4/src/xen/xen_hypervisor.c
> ===================================================================
> --- libvirt-0.7.4.orig/src/xen/xen_hypervisor.c
> +++ libvirt-0.7.4/src/xen/xen_hypervisor.c
> @@ -2100,12 +2100,14 @@ xenHypervisorInit(void)
> DEBUG0("Using hypervisor call v2, sys ver6 dom ver5\n");
> goto done;
> }
> - /* Xen 4.0 */
> + }
> +
> + /* Xen 4.0 */
> + sys_interface_version = 7; /* XEN_SYSCTL_INTERFACE_VERSION */
> + if (virXen_getdomaininfo(fd, 0, &info) == 1) {
> dom_interface_version = 6; /* XEN_DOMCTL_INTERFACE_VERSION */
> - if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
> - DEBUG0("Using hypervisor call v2, sys ver6 dom ver6\n");
> - goto done;
> - }
> + DEBUG0("Using hypervisor call v2, sys ver7 dom ver6\n");
> + goto done;
> }
>
> hypervisor_version = 1;
ACK
Daniel
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