[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: PoD with Windows Balloon
It looks like possibly the GPLPV baloon driver is using the wrong value to calculate how much memory it's starting with (and thus how big it needs to make the balloon)? The Citrix Windows PV drivers (which you can get free-as-in-beer from the XCP distribution) work properly with PoD on open-source last time I checked (probably a month ago). -George On 30/11/10 11:05, Chu Rui wrote: Hi, I have tried PoD in Windows/HVM. My VMM is XEN 4.0.0, Domain0 is RHEL 5.4/kernel 2.6.31, and DomainU is Windows 2003. It does not work well as in Linux/HVM. The primary problem looks in the balloon driver, which was obtained from http://xenbits.xensource.com/ext/win-pvdrivers.hg In my configuration, memory=512M, and maxmem=2G. After booted, I want to inflate the balloon with the target=390M, but the balloon driver does not work correctly. It becomes clear after I get the debug messges from the balloon driver as this: 00000000 0.00000000 XenPCI --> XenPci_BalloonHandler 00000001 0.00153629 XenPCI target memory value = 390 (400000) 00000002 0.00619057 XenPCI <-- XenPci_BalloonHandler 00000003 0.00619715 XenPCI Got balloon event, current = 512, target = 390 00000004 0.00858740 XenPCI Trying to give 122 MB to Xen 00000005 0.00968578 XenPCI Calling HYPERVISOR_memory_op(XENMEM_decrease_reservation) - pfn_count = 256 00000006 0.02019652 XenPCI decreased 256 pages ...... Obviously, the balloon driver thinks that the system has(target) only 512M memory when booted, thus the balloon size was 122MB, not 2G-390M. Is it a bug of the Windows balloon driver? Does it work if I simply modify the source code to make the initial target value as 2G? Thanks. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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