On Sat, Dec 19, 2009 at 2:34 AM, Alexander Graf <ag...@suse.de> wrote: > > Am 18.12.2009 um 17:52 schrieb Jun Koi <junkoi2...@gmail.com>: > >> On Fri, Dec 18, 2009 at 8:35 PM, Alexander Graf <ag...@suse.de> wrote: >>> >>> Am 18.12.2009 um 03:39 schrieb Jun Koi <junkoi2...@gmail.com> >>> >>>> On Fri, Dec 18, 2009 at 11:37 AM, Jun Koi <junkoi2...@gmail.com> wrote: >>>>> >>>>> Hi, >>>>> >>>>> I am running latest Qemu 0.12-rc. My guest VM runs Linux kernel 2.6.31. >>>>> >>>>> Because Qemu now supports SVM, I expect to see the SVM flag in >>>>> /proc/cpuinfo, but that is not the case. >>>>> >>>>> So it seems SVM support is not enabled by default configuration?? >>>>> >>>> >>>> My host and guest are both 32 bit Linux, if that matters. >>>> >>>> (And this is pure Qemu, without using KVM or KQemu) >>> >>> Kqemu actually works with svm emulation. >>> >>> Have you tried -cpu qemu32,+svm? I think I only enabled svm on qemu64, >>> because I'm not aware of 32-bit AMD CPUs that can do svm. >>> >>> If you use -cpu qemu32 that also means you'll get an emulated Intel CPU. >>> KVM-AMD will refuse there. >>> >>> Also, back when I developed it, 32-bit kvm didn't really work properly. >>> So >>> please let me know what you find out! >> >> I tried the latest Qemu code, with the following command: >> >> qemu -m 500 -cpu qemu32,+svm -cdrom ubuntu.iso >> >> I verified that /proc/cpuinfo has no svm flag. So SVM doesnt work on 32bit >> host. >> >> I will try that with 64bit host to see how it goes. > > The host doesn't matter. You can easily run qemu-system-x86_64 on a 32-bit > host. >
I can confirm that SVM works well on x86-64 target, but fails on i386 target. Thanks, J