[HVM] Re-introduce the 'apic' configuration option, default to 1.

Also simplify the HVM builder interface by doing more work in
the python wrapper, and fix mapping of shared_info page after the
change to map foreign pages by GMFN rather than MFN.

Signed-off-by: Keir Fraser <keir@xensource.com>

tools/python/README.XendConfig

@@ -123,6 +123,7 @@ otherConfig
                                 image.hvm.vncconsole
                                 image.hvm.pae
                                 image.hvm.acpi (also in image.devices)
+                                image.hvm.apic
                                 image.hvm.devices.boot
                                 image.hvm.devices.fda
                                 image.hvm.devices.fdb

tools/python/README.sxpcfg

@@ -56,6 +56,7 @@ image
   - vncconsole
   - pae
   - acpi
+  - apic
   (parseDeviceModel)
   - boot
   - fda

tools/python/xen/lowlevel/xc/xc.c

@@ -13,10 +13,13 @@
 #include <netinet/tcp.h>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/mman.h>
 #include <netdb.h>
 #include <arpa/inet.h>
 
 #include "xenctrl.h"
+#include <xen/hvm/hvm_info_table.h>
+#include <xen/hvm/params.h>
 
 /* Needed for Python versions earlier than 2.3. */
 #ifndef PyMODINIT_FUNC
@@ -371,26 +374,46 @@ static PyObject *pyxc_hvm_build(XcObject *self,
                                 PyObject *kwds)
 {
     uint32_t dom;
+    struct hvm_info_table *va_hvm;
+    uint8_t *va_map, sum;
     char *image;
-    int store_evtchn;
-    int memsize;
-    int vcpus = 1;
-    int pae  = 0;
-    int acpi = 0;
-    unsigned long store_mfn = 0;
+    int i, store_evtchn, memsize, vcpus = 1, pae = 0, acpi = 0, apic = 1;
+    unsigned long store_mfn;
 
     static char *kwd_list[] = { "domid", "store_evtchn",
 				"memsize", "image", "vcpus", "pae", "acpi",
-				NULL };
-    if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiisiii", kwd_list,
+				"apic", NULL };
+    if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiis|iiii", kwd_list,
                                       &dom, &store_evtchn, &memsize,
-                                      &image, &vcpus, &pae, &acpi) )
+                                      &image, &vcpus, &pae, &acpi, &apic) )
         return NULL;
 
-    if ( xc_hvm_build(self->xc_handle, dom, memsize, image,
-                      vcpus, pae, acpi, store_evtchn, &store_mfn) != 0 )
+    if ( xc_hvm_build(self->xc_handle, dom, memsize, image) != 0 )
         return PyErr_SetFromErrno(xc_error);
 
+    /* Set up the HVM info table. */
+    va_map = xc_map_foreign_range(self->xc_handle, dom, PAGE_SIZE,
+                                  PROT_READ | PROT_WRITE,
+                                  HVM_INFO_PFN);
+    if ( va_map == NULL )
+        return PyErr_SetFromErrno(xc_error);
+    va_hvm = (struct hvm_info_table *)(va_map + HVM_INFO_OFFSET);
+    memset(va_hvm, 0, sizeof(*va_hvm));
+    strncpy(va_hvm->signature, "HVM INFO", 8);
+    va_hvm->length       = sizeof(struct hvm_info_table);
+    va_hvm->acpi_enabled = acpi;
+    va_hvm->apic_mode    = apic;
+    va_hvm->nr_vcpus     = vcpus;
+    for ( i = 0, sum = 0; i < va_hvm->length; i++ )
+        sum += ((uint8_t *)va_hvm)[i];
+    va_hvm->checksum = -sum;
+    munmap(va_map, PAGE_SIZE);
+
+    xc_get_hvm_param(self->xc_handle, dom, HVM_PARAM_STORE_PFN, &store_mfn);
+    xc_set_hvm_param(self->xc_handle, dom, HVM_PARAM_PAE_ENABLED, pae);
+    xc_set_hvm_param(self->xc_handle, dom, HVM_PARAM_STORE_EVTCHN,
+                     store_evtchn);
+
     return Py_BuildValue("{s:i}", "store_mfn", store_mfn);
 }
 

tools/python/xen/xend/image.py

@@ -252,7 +252,6 @@ class HVMImageHandler(ImageHandler):
         ImageHandler.__init__(self, vm, imageConfig, deviceConfig)
         self.shutdownWatch = None
 
-
     def configure(self, imageConfig, deviceConfig):
         ImageHandler.configure(self, imageConfig, deviceConfig)
 
@@ -277,9 +276,9 @@ class HVMImageHandler(ImageHandler):
 
         self.dmargs += self.configVNC(imageConfig)
 
-        self.pae  = int(sxp.child_value(imageConfig, 'pae', 0))
-
-        self.acpi = int(sxp.child_value(imageConfig, 'acpi', 0))
+        self.pae  = int(sxp.child_value(imageConfig, 'pae',  1))
+        self.acpi = int(sxp.child_value(imageConfig, 'acpi', 1))
+        self.apic = int(sxp.child_value(imageConfig, 'apic', 1))
 
     def buildDomain(self):
         store_evtchn = self.vm.getStorePort()
@@ -293,6 +292,7 @@ class HVMImageHandler(ImageHandler):
         log.debug("vcpus          = %d", self.vm.getVCpuCount())
         log.debug("pae            = %d", self.pae)
         log.debug("acpi           = %d", self.acpi)
+        log.debug("apic           = %d", self.apic)
 
         self.register_shutdown_watch()
 
@@ -302,7 +302,8 @@ class HVMImageHandler(ImageHandler):
                             memsize        = mem_mb,
                             vcpus          = self.vm.getVCpuCount(),
                             pae            = self.pae,
-                            acpi           = self.acpi)
+                            acpi           = self.acpi,
+                            apic           = self.apic)
 
     # Return a list of cmd line args to the device models based on the
     # xm config file

tools/python/xen/xm/create.py

@@ -174,13 +174,17 @@ gopts.var('cpus', val='CPUS',
           use="CPUS to run the domain on.")
 
 gopts.var('pae', val='PAE',
-          fn=set_int, default=0,
+          fn=set_int, default=1,
           use="Disable or enable PAE of HVM domain.")
 
 gopts.var('acpi', val='ACPI',
-          fn=set_int, default=0,
+          fn=set_int, default=1,
           use="Disable or enable ACPI of HVM domain.")
 
+gopts.var('apic', val='APIC',
+          fn=set_int, default=1,
+          use="Disable or enable APIC mode.")
+
 gopts.var('vcpus', val='VCPUS',
           fn=set_int, default=1,
           use="# of Virtual CPUS in domain.")
@@ -664,9 +668,9 @@ def configure_hvm(config_image, vals):
              'localtime', 'serial', 'stdvga', 'isa', 'nographic', 'soundhw',
              'vnc', 'vncdisplay', 'vncunused', 'vncconsole', 'vnclisten',
              'sdl', 'display', 'xauthority',
-             'acpi', 'usb', 'usbdevice', 'keymap' ]
+             'acpi', 'apic', 'usb', 'usbdevice', 'keymap' ]
     for a in args:
-        if (vals.__dict__[a]):
+        if a in vals.__dict__ and vals.__dict__[a] is not None:
             config_image.append([a, vals.__dict__[a]])
     config_image.append(['vncpasswd', vals.vncpasswd])