Hi all,
this patch requests 32 additional MB of free RAM from dom0 when an HVM
domain is started, if the device model for the domain is provided by a
stubdom.
This way there is no risk that a stubdom fails to populate the videoram
because the RAM freed for the videoram by dom0 has already been used to
create the stubdom.
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
diff -r 10a8fae412c5 tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Wed Jan 14 13:43:17 2009 +0000
+++ b/tools/python/xen/xend/image.py Thu Jan 15 16:33:26 2009 +0000
@@ -838,6 +838,7 @@
 HVMImageHandler.configure(self, vmConfig)
 self.vhpt = int(vmConfig['platform'].get('vhpt', 0))
 self.vramsize = int(vmConfig['platform'].get('videoram',4)) * 1024
+ self.use_stubdom = 
(vmConfig['platform'].get('device_model').find('stubdom-dm') >= 0)
 
 def buildDomain(self):
 xc.nvram_init(self.vm.getName(), self.vm.getDomid())
@@ -853,6 +854,8 @@
 extra_pages = 1024 + 5
 mem_kb += extra_pages * page_kb
 mem_kb += self.vramsize
+ if self.use_stubdom :
+ mem_kb += 32 * 1024 
 return mem_kb
 
 def getRequiredInitialReservation(self):
@@ -888,6 +891,7 @@
 HVMImageHandler.configure(self, vmConfig)
 self.pae = int(vmConfig['platform'].get('pae', 0))
 self.vramsize = int(vmConfig['platform'].get('videoram',4)) * 1024
+ self.use_stubdom = 
(vmConfig['platform'].get('device_model').find('stubdom-dm') >= 0)
 
 def buildDomain(self):
 xc.hvm_set_param(self.vm.getDomid(), HVM_PARAM_PAE_ENABLED, self.pae)
@@ -896,7 +900,10 @@
 return rc
 
 def getRequiredAvailableMemory(self, mem_kb):
- return mem_kb + self.vramsize
+ mem_kb += self.vramsize
+ if self.use_stubdom :
+ mem_kb += 32 * 1024
+ return mem_kb
 
 def getRequiredInitialReservation(self):
 return self.vm.getMemoryTarget()
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