[Patch 4/4]: Xend interface for HVM S3
- extend "xm resume <domid>" to be able to S3 resume HVM
domain.
- when user issue "xm resume" command for HVM domain, xend will use
xc
lib API to call HVMOP_s3_resume hypercall.
Note: it may not appropriate use xm resume for HVM s3, since xm resume
is originally designed for save/restor purpose. It will be fine that
xend maintainer find another place to put this code.
Signed-off-by: Yu Ke <ke.yu@intel.com>
diff -r 8d4bb5f37e73 tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Tue May 15 14:36:11 2007 -0400
+++ b/tools/python/xen/lowlevel/xc/xc.c Tue May 15 14:43:34 2007 -0400
@@ -487,6 +487,24 @@ static PyObject *pyxc_get_hvm_param(XcOb
}
+static PyObject *pyxc_hvm_s3_resume(XcObject *self,
+ PyObject *args,
+ PyObject *kwds)
+{
+ uint32_t dom;
+
+ static char *kwd_list[] = { "domid", NULL };
+ if ( !PyArg_ParseTupleAndKeywords(args, kwds, "i", kwd_list,
+ &dom ) )
+ return NULL;
+
+ if ( xc_hvm_s3_resume(self->xc_handle, dom) != 0 )
+ return pyxc_error_to_exception();
+
+ Py_INCREF(zero);
+ return zero;
+}
+
static PyObject *pyxc_hvm_build(XcObject *self,
PyObject *args,
PyObject *kwds)
@@ -1252,6 +1270,13 @@ static PyMethodDef pyxc_methods[] = {
" dom [int]: Identifier of domain to build into.\n"
" param [int]: No. of HVM param.\n"
"Returns: [int] value of the param.\n" },
+
+ { "hvm_s3_resume",
+ (PyCFunction)pyxc_hvm_s3_resume,
+ METH_VARARGS | METH_KEYWORDS, "\n"
+ "resume HVM domain from S3 sleep state.\n"
+ " dom [int]: Identifier of domain .\n"
+ "Returns: [int] 0 on success; -1 on error.\n" },
{ "sched_id_get",
(PyCFunction)pyxc_sched_id_get,
diff -r 8d4bb5f37e73 tools/python/xen/xend/XendDomain.py
--- a/tools/python/xen/xend/XendDomain.py Tue May 15 14:36:11 2007
-0400
+++ b/tools/python/xen/xend/XendDomain.py Tue May 15 14:36:13 2007
-0400
@@ -866,6 +866,10 @@ class XendDomain:
try:
dominfo = self.domain_lookup_nr(domname)
+ if dominfo.info.is_hvm():
+ dominfo.hvm_resume()
+ return
+
if not dominfo:
raise XendInvalidDomain(domname)
diff -r 8d4bb5f37e73 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py Tue May 15 14:36:11 2007
-0400
+++ b/tools/python/xen/xend/XendDomainInfo.py Tue May 15 14:36:13 2007
-0400
@@ -437,6 +437,13 @@ class XendDomainInfo:
else:
raise XendError(''VM is not susupened; it is %s''
% XEN_API_VM_POWER_STATE[state])
+ def hvm_resume(self):
+ """ Resume a HVM domain from S3 sleep
state."""
+ if not self.info.is_hvm():
+ raise XendError(''Try to hvm_resume a non-HVM
domain'')
+ rc = xc.hvm_s3_resume(self.domid)
+ if not rc:
+ log.info("HVM S3 resume domain %d failed\n", self.domid)
def shutdown(self, reason):
"""Shutdown a domain by signalling this via
xenstored."""
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