* How to use shadow page in KVM?
@ 2015-03-08 8:54 Taowei Luo
2015-03-08 12:46 ` Paolo Bonzini
0 siblings, 1 reply; 3+ messages in thread
From: Taowei Luo @ 2015-03-08 8:54 UTC (permalink / raw)
To: kvm
Hello everyone!
I am trying to make a comparison between several paging modes in
virtualization. (hardware assisted paging and shadow paging
especially)
But just failed on using shadow page in virtual machines managed by KVM.
In my experiments, HAP is used by default. It can't be disabled or
switches to shadow page by simply removing the kvm-intel module or
calling kvm_disable_tdp(). So I am asking for help and suggestions.
Regards,
Taowei.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to use shadow page in KVM?
2015-03-08 8:54 How to use shadow page in KVM? Taowei Luo
@ 2015-03-08 12:46 ` Paolo Bonzini
2015-03-09 2:06 ` Taowei Luo
0 siblings, 1 reply; 3+ messages in thread
From: Paolo Bonzini @ 2015-03-08 12:46 UTC (permalink / raw)
To: Taowei Luo, kvm
On 08/03/2015 09:54, Taowei Luo wrote:
> Hello everyone!
>
> I am trying to make a comparison between several paging modes in
> virtualization. (hardware assisted paging and shadow paging
> especially)
>
> But just failed on using shadow page in virtual machines managed by KVM.
>
> In my experiments, HAP is used by default. It can't be disabled or
> switches to shadow page by simply removing the kvm-intel module or
> calling kvm_disable_tdp(). So I am asking for help and suggestions.
Load the kvm-intel module with the ept=0 parameter.
Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to use shadow page in KVM?
2015-03-08 12:46 ` Paolo Bonzini
@ 2015-03-09 2:06 ` Taowei Luo
0 siblings, 0 replies; 3+ messages in thread
From: Taowei Luo @ 2015-03-09 2:06 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: kvm
Thank you! It works for me.
soft_mmu is working after I add kvm-intel.ept=0 in kernel cmd line.
2015-03-08 20:46 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>:
>
>
> On 08/03/2015 09:54, Taowei Luo wrote:
>> Hello everyone!
>>
>> I am trying to make a comparison between several paging modes in
>> virtualization. (hardware assisted paging and shadow paging
>> especially)
>>
>> But just failed on using shadow page in virtual machines managed by KVM.
>>
>> In my experiments, HAP is used by default. It can't be disabled or
>> switches to shadow page by simply removing the kvm-intel module or
>> calling kvm_disable_tdp(). So I am asking for help and suggestions.
>
> Load the kvm-intel module with the ept=0 parameter.
>
> Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-03-09 2:06 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2015-03-08 8:54 How to use shadow page in KVM? Taowei Luo
2015-03-08 12:46 ` Paolo Bonzini
2015-03-09 2:06 ` Taowei Luo
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