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authorDavid Vrabel <david.vrabel@citrix.com>2013-10-14 10:24:03 +0200
committerJan Beulich <jbeulich@suse.com>2013-10-14 10:24:03 +0200
commit783b9e67f963bbb068b68fea4426131858145b0f (patch)
tree15a6d1b9becb60a50e8f04f52e17fe1faf6c6de8
parent8ec7763c807f252e930c9647a0631253db2844a7 (diff)
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libxc: add xc_domain_set_max_evtchn()
Add xc_domain_set_max_evtchn(), a wrapper around the DOMCTL_set_max_evtchn hypercall. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Keir Fraser <keir@xen.org>
-rw-r--r--tools/libxc/xc_domain.c11
-rw-r--r--tools/libxc/xenctrl.h12
2 files changed, 23 insertions, 0 deletions
diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c
index 81316d3c7f..2cea6e3841 100644
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -1766,6 +1766,17 @@ int xc_domain_set_virq_handler(xc_interface *xch, uint32_t domid, int virq)
return do_domctl(xch, &domctl);
}
+int xc_domain_set_max_evtchn(xc_interface *xch, uint32_t domid,
+ uint32_t max_port)
+{
+ DECLARE_DOMCTL;
+
+ domctl.cmd = XEN_DOMCTL_set_max_evtchn;
+ domctl.domain = domid;
+ domctl.u.set_max_evtchn.max_port = max_port;
+ return do_domctl(xch, &domctl);
+}
+
/*
* Local variables:
* mode: C
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index 58d51f353a..8cf3f3bd15 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -847,6 +847,18 @@ int xc_domain_set_access_required(xc_interface *xch,
*/
int xc_domain_set_virq_handler(xc_interface *xch, uint32_t domid, int virq);
+/**
+ * Set the maximum event channel port a domain may bind.
+ *
+ * This does not affect ports that are already bound.
+ *
+ * @param xch a handle to an open hypervisor interface
+ * @param domid the domain id
+ * @param max_port maximum port number
+ */
+int xc_domain_set_max_evtchn(xc_interface *xch, uint32_t domid,
+ uint32_t max_port);
+
/*
* CPUPOOL MANAGEMENT FUNCTIONS
*/