Re: [Qemu-devel] Problems with VM after kernel commit b18d5431acc7a2fd22767925f3a6f597aa4bd29e

[Wolfgang Link]

Thanks you for the quick reply and the good news.

Wolfgang
On 11/13/2015 04:01 PM, Paolo Bonzini wrote:
> On 13/11/2015 15:55, Wolfgang Link wrote:
> > Hi,
> >
> > We have problems with a HP ProLiant DL380 Gen9 and Vm's with large
> > amount of memory, grater then 30GB.
> >
> > The problem is that the vm need about 10 sec to start to boot.
> > and when it comes to syncing the cpu clock, it takes a long time to
> > finish this task.
> > What also occurs is the vcpus need at startup 100% cpu usage and take
> > over 1 min.
> This has been fixed already, and the fix is slowly propagating to the
> stable kernels.
>
> The fixes are:
>
> - KVM: vmx: obey KVM_QUIRK_CD_NW_CLEARED (fixed already in 4.2)
>
> - KVM: x86: obey KVM_X86_QUIRK_CD_NW_CLEARED in kvm_set_cr0() (in 4.4,
> will be backported)
>
> Paolo