Zheng, Shaohui wrote: > In our experiences, windows 2008 datacenter is the only version to > support CPU hotplug, and we did not find any official announce for > other windows, so we tested windows 2008 data center only. > > Thanks for Kevin pointing out it, we will try windows7 hotplug > feature. > > Thanks & Regards, > Shaohui > > > -----Original Message----- > From: Kevin O'Connor [mailto:kevin@xxxxxxxxxxxx] > Sent: Tuesday, August 03, 2010 1:27 AM > To: Avi Kivity > Cc: Alexander Graf; Liu, Jinsong; seabios@xxxxxxxxxxx; > kvm@xxxxxxxxxxxxxxx; Jiang, Yunhong; Li, Xin; Zheng, Shaohui; Zhang, > Jianwu; You, Yongkang > Subject: Re: Alt SeaBIOS SSDT cpu hotplug > > On Mon, Aug 02, 2010 at 07:13:34PM +0300, Avi Kivity wrote: >> On 08/02/2010 06:55 PM, Kevin O'Connor wrote: >>> On Mon, Aug 02, 2010 at 10:12:31AM +0200, Alexander Graf wrote: >>>> On 02.08.2010, at 07:49, Kevin O'Connor wrote: >>>>> On Mon, Aug 02, 2010 at 10:41:39AM +0800, Liu, Jinsong wrote: >>>>> It seems the Windows acpi interpreter is significantly different >>>>> from the Linux one. The only guess I have is that Windows >>>>> doesn't like one of the ASL constructs even though they all look >>>>> valid. I'd try to debug this by commenting out parts of the ASL >>>>> until I narrowed down the parts causing the problem. >>>>> Unfortunately, I don't have Windows 2008 to do this directly. >>>>> >>>>> Any other ideas? >>>> Just grab yourself a free copy of the Hyper-V server 2008: >>>> >>>> http://arstechnica.com/microsoft/news/2009/08/microsoft-hyper-v-server-2008-r2-arrives-for-free.ars >>> I downloaded and installed it, but I can't reproduce the crash. It >>> seems like a really stripped down version of Windows, so I can't >>> tell if it actually worked or not either. >> >> I thought only the Datacenter edition supported cpu hotplug. > > I just tried an old Win 7 Ultimate beta (build 7100) I had on my HD. > It looks like it supports cpu hotplug. However, I don't see any > failures - it seems to work fine. (After running "cpu_set 1 online", > the event pops up in the system event log as a UserPnP event, and the > CPU appears in the system devices list.) > > -Kevin Kevin, I just test your new patch with Windows 2008 DataCenter at my platform, it works OK! We can hot-add new cpus and they appear at Device Manager. (BTW, yesterday I test your new patch with linux 2.6.32 hvm, it works fine, we can add-remove-add-remove... cpus) Sorry for make you spend more time. It's our fault. Thanks, Jinsong -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
