On Wed, Jul 17, 2013 at 06:32:15PM +0200, Markus Trippelsdorf wrote:
> The following commit:
> commit f8f559422b6c6a05469dfde614b67789b6142cb5
> Author: Xiao Guangrong <xiaoguangr...@linux.vnet.ibm.com>
> Date: Fri Jun 7 16:51:26 2013 +0800
>
> KVM: MMU: fast invalidate all mmio sptes
>
> causes my kvm qemu qcow2 images to hang when they switch from the boot
> console to the desktop. For example:
> qemu-system-x86_64 -enable-kvm -net nic,vlan=0,model=virtio -net user -drive
> file=ubuntu,if=virtio,cache=unsafe -smp 2 -m 1024
> boots normally at first, but then hangs as soon as Xorg gets started.`
>
Which guest is is exactly and how reproducible is this?
> Perf top shows:
> 20.99% [kernel] [k] svm_vcpu_run
> 17.24% [kernel] [k]
> handle_mmio_page_fault_common
> 15.61% [kernel] [k] kvm_arch_vcpu_ioctl_run
> 12.49% [kernel] [k] fast_page_fault.part.78
>
> I'm running:
> QEMU emulator version 1.4.2
> on an AMD PhenomII X4 CPU.
>
What is the output of "cat /proc/cpuinfo"?
--
Gleb.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
