I was thinking of a bug when using large pages, which may not be your problem. There have been other reports recently, with workarounds, that are similar, just not the exact same number you have. some subjects to look for: * Can't boot guest with more than 3585MB when using large pages There was a patch from Marcelo that was supposed to fix it. * kvm-84 and guests with more than 3536 MB Ram? there were suggestions to make sure to use the correct bios and the OP stated that upgrading his kernel actually fixed the problem I could swear there was another one, but maybe I'm thinking of the IRC channel. If you are still unable to get it to work, you should reply back with more info. Kernel version, KVM version, etc. Good luck. --Brian Jackson On Thursday 09 April 2009 10:07:36 Daniel Scott wrote: > Hi, > > Thanks for the response. I have read through the archives (I also did > so before posting :) ) but I haven't been able to find any information > about this. Do you know where I can find it? I tried searching for 4GB > and 3525MB and various combinations. Do you know if a specific limit > is mentioned? > > Thanks, > > Dan > > 2009/4/6 Brian Jackson <iggy@xxxxxxxxxxx>: > > Read the list archives. A fix was discussed recently. > > > > --Brian Jackson > > > > On Monday 06 April 2009 21:59:24 Daniel Scott wrote: > >> Hi, > >> > >> I'm running a KVM host using Fedora 10 (x86_64) on 4x Quad-Core AMD > >> Opteron(tm) Processor 8347 HE system with 16GB ram. I've created a > >> Fedora 10 (x86_64) guest and allocated 8 CPUs and 8GB ram which I can > >> see using 'virt-manager'. When I login to the guest, I can see the 8 > >> CPUs, but apparently, I only have 3525MB RAM (output from 'free'). At > >> first I thought it was a 32bit problem, but I've double checked and > >> the host and guest are both running 64bit architectures. virt-manager > >> shows 50% ram usage which appears to be correct (4GB, out of 8). It > >> also correctly recognises the 16GB available in the host machine. > >> > >> Is this expected? Will the extra ram become available once it is > >> required? If not, does anyone have any Ideas for how I can fix the > >> problem? > >> > >> Thanks, > >> > >> Dan > >> -- > >> 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 > > -- > 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 -- 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
