On Thu, 2014-12-04 at 10:48 +0800, Thomas Lau wrote: > what does vapic affect Windows 7 at all if I disable it? if it just a > minor performance drop, I am fine with that. > It's good to have it turned on. But you definitely can drop it off. > On Thu, Dec 4, 2014 at 10:06 AM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: > >>Sure, but I am little confused as KVM is part of linux kernel now, if > >>I want to try it, should I just upgrade kernel or compile kvm kernel > >>module by myself ?! > >> > > You can just apply the patch to kvm module and rebuild it. > > > >>On Thu, Dec 4, 2014 at 10:01 AM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: > >>>>I just confirmed that vapic is causing win7 stuck. > >>>> > >>> You'd better try the commit fc57ac2c9ca :-) > >>> > >>>>On Thu, Dec 4, 2014 at 9:34 AM, Thomas Lau <tlau@xxxxxxxxxxxxxxxxxx> wrote: > >>>>> Hi, > >>>>> > >>>>> I don't want to recompile stuff, does it matter to have hv_vapic on at all? > >>>>> > >>>>> On Thu, Dec 4, 2014 at 9:24 AM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: > >>>>>>> Oh I see, > >>>>>>> > >>>>>>> So 101 BSOD problem is well known? Can't find any document mention about 101 BSOD online. > >>>>>>> > >>>>>>> I tried to use hv_ other options but Win7 can't boot up properly and stucked at starting Windows screen. > >>>>>>> > >>>>>> Could you confirm that the stuck was caused by vhich hv feature? > >>>>>> The commit fc57ac2c9ca can resolve a stuck caused by hv_vapic which I encountered before. > >>>>>> https://git.kernel.org/cgit/virt/kvm/kvm.git/commit/arch/x86/kvm/lapic.c?id=fc57ac2c9ca8109ea97fcc594f4be436944230cc > >>>>>> > >>>>>>> Sent from my BlackBerry 10 smartphone. > >>>>>>> Original Message > >>>>>>> From: Vadim Rozenfeld > >>>>>>> Sent: Wednesday, 3 December, 2014 7:30 PM > >>>>>>> To: Thomas Lau > >>>>>>> Cc: Zhang Haoyu; kvm; imammedo > >>>>>>> Subject: Re: Windows 7 VM BSOD > >>>>>>> > >>>>>>> If you run WS2008(R2) or Win7 - always turn on relaxed timing. Otherwise > >>>>>>> it's just a matter of time when you hit 101 BOSD. > >>>>>>> Bugcheck 78 is quite rare one. What is your setup, and how easy it's > >>>>>>> reproducible? > >>>>>>> > >>>>>>> Best regards, > >>>>>>> Vadim. > >>>>>>> > >>>>>>> On Wed, 2014-12-03 at 19:13 +0800, Thomas Lau wrote: > >>>>>>> > "it works on your side" meaning that you had such issue but afterwards > >>>>>>> > it's all fixed by apply hv_relaxed ? > >>>>>>> > > >>>>>>> > On Wed, Dec 3, 2014 at 7:08 PM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: > >>>>>>> > >> https://bugzilla.redhat.com/show_bug.cgi?id=893857 > >>>>>>> > >> > >>>>>>> > >> In fact I am doing testing now, but are we fixing one problem and > >>>>>>> > >> introduce other problem?! > >>>>>>> > >> > >>>>>>> > > I'm not sure about this, but it works on my side, > >>>>>>> > > I think BSOD(error:0x00000078) has been fixed, > >>>>>>> > > please show your environment. > >>>>>>> > > > >>>>>>> > > Thanks, > >>>>>>> > > Zhang Haoyu > >>>>>>> > >> On Wed, Dec 3, 2014 at 6:36 PM, Thomas Lau <tlau@xxxxxxxxxxxxxxxxxx> wrote: > >>>>>>> > >> > Hi, > >>>>>>> > >> > > >>>>>>> > >> > How do I know if my qemu-kvm version support this? > >>>>>>> > >> > > >>>>>>> > >> > On Wed, Dec 3, 2014 at 6:25 PM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: > >>>>>>> > >> >>> Hi All, > >>>>>>> > >> >>> > >>>>>>> > >> >>> I am running 3.13.0-24-generic kernel on Ubuntu 14, Windows 7 VM > >>>>>>> > >> >>> installation was fine, but it does random reboot by itself, the error > >>>>>>> > >> >>> code is 0x00000101, does anyone know how to fix this? > >>>>>>> > >> >> Could you try hv_relaxed, like "-cpu kvm64,hv_relaxed". > >>>>>>> > >> >> > >>>>>>> > >> >> Thanks, > >>>>>>> > >> >> Zhang Haoyu > >>>>> > >>>>> > >>>>> > >>>>> -- > >>>>> Thomas Lau > >>>>> Director of Infrastructure > >>>>> Tetrion Capital Limited > >>>>> > >>>>> Direct: +852-3976-8903 > >>>>> Mobile: +852-9323-9670 > >>>>> Address: 20/F, IFC 1, Central district, Hong Kong > > > > > -- 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
