From: Wolfgang Link <w.link@proxmox.com>
To: Paolo Bonzini <pbonzini@redhat.com>, guangrong.xiao@linux.intel.com
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Problems with VM after kernel commit b18d5431acc7a2fd22767925f3a6f597aa4bd29e
Date: Fri, 13 Nov 2015 16:03:51 +0100 [thread overview]
Message-ID: <5645FBD7.5020101@proxmox.com> (raw)
In-Reply-To: <5645FB32.1080108@redhat.com>
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
>
next prev parent reply other threads:[~2015-11-13 15:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-13 14:55 [Qemu-devel] Problems with VM after kernel commit b18d5431acc7a2fd22767925f3a6f597aa4bd29e Wolfgang Link
2015-11-13 15:01 ` Paolo Bonzini
2015-11-13 15:03 ` Wolfgang Link [this message]
2015-11-13 15:04 ` Paolo Bonzini
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