Gleb Natapov wrote: > On Wed, Apr 15, 2009 at 01:30:29PM +0400, Dmitry Eremin-Solenikov wrote: >> 2009/4/14 Gleb Natapov <gleb@xxxxxxxxxx>: >>> On Tue, Apr 14, 2009 at 11:29:49PM +0400, Dmitry Eremin-Solenikov wrote: >>>> 2009/4/14 Gleb Natapov <gleb@xxxxxxxxxx>: >>>>> On Tue, Apr 14, 2009 at 06:32:29PM +0400, Dmitry Eremin-Solenikov wrote: >>>>>> 2009/4/14 Gleb Natapov <gleb@xxxxxxxxxx>: >>>>>>> On Tue, Apr 14, 2009 at 02:14:04PM +0000, Dmitry Eremin-Solenikov wrote: >>>>>>>> Gleb Natapov wrote: >>>>>>>> >>>>>>>>> Start to use interrupt/exception queues like VMX does. This also fix the >>>>>>>>> bug that if exit was caused by a guest internal exception access to IDT >>>>>>>>> the exception was not reinjected. >>>>>>>> This patch broke KVM for me: after it is applied (to the tip of avi's git tree), >>>>>>>> linux inside KVM (version 84 from Debian) stops booting, moaning about lost >>>>>>>> interrupts from ide. The KVM is executed inside qemu-system-x86_64, >>>>>>>> version 0.10.2. >>>>>>>> >>>>>>> Please apply next patch in the series too. This one will not work >>>>>>> without it. But better yet can you please test entire series. >>>>>> After applying the next patch (or the whole serie), I get the following messages >>>>>> during initramfs drivers probe: >>>>>> >>>>>> Clocksource tsc unstable (delta...) >>>>>> no cont in shutdown! >>>>>> floppy0: FDC access conflict! >>>>>> >>>>>> Then kernel boot stalls. I'll try gdbing into kernel but this may >>>>>> require lots of efforts. >>>>>> I don't quite understand how do these two patches influence FDC emulation, but >>>>>> they do. Tell me if you need any additional info. >>>>>> >>>>> What guest is this? What kernel? Does the whole series works? >>>> Guest: Debian lenny. Linux 2.6.26, Debian version (I can provide >>>> config or bzImage + initrd). >>> Yes please provide. Debian lenny (x86_64) is my default guest :) And I >>> just booted it fine on AMD barcelona CPU. What is you host cpu? >>> "cat /proc/cpuinfo" >> qemu-x86_64 version 0.10.2 running on i386 >> Due to problems with qemu-x86_64 I have to boot the 'host' kernel with 'noapic'. >> qemu-64:~# cat /proc/cpuinfo >> processor : 0 >> vendor_id : AuthenticAMD >> cpu family : 6 >> model : 2 >> model name : QEMU Virtual CPU version 0.10.2 >> stepping : 3 >> cpu MHz : 1828.754 >> cache size : 512 KB >> fpu : yes >> fpu_exception : yes >> cpuid level : 2 >> wp : yes >> flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca >> cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm 3dnowext 3dnow >> up pni svm >> bogomips : 3700.32 >> TLB size : 1024 4K pages >> clflush size : 64 >> cache_alignment : 64 >> address sizes : 40 bits physical, 48 bits virtual >> power management: >> >> > I need _host_ cpu info. Do the same on the host please. That _is_ his host - qemu in emulation mode (ie. nested virtualization). Maybe there is an issue with qemu's emulation of svm or, rather, with the apic emulation. The fact that he has to boot the first-level guest with noapic is fairly suspicious. Dmitry, what is your first level-guest distro/kernel, also Lenny? And what is the top-level qemu command line? Let's focus on this first, leaving KVM and this patch series aside for a while. Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux -- 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
