On 2019/10/3 0:47, Sean Christopherson wrote:
On Tue, Oct 01, 2019 at 05:47:00PM +0800, Zhenzhong Duan wrote:
On 2019/10/1 16:39, Vitaly Kuznetsov wrote:
Zhenzhong Duan writes:
On 2019/9/30 23:41, Vitaly Kuznetsov wrote:
Zhenzhong Duan writes:
There are cases where a guest tries to
On Tue, Oct 01, 2019 at 05:47:00PM +0800, Zhenzhong Duan wrote:
>
> On 2019/10/1 16:39, Vitaly Kuznetsov wrote:
> >Zhenzhong Duan writes:
> >
> >>On 2019/9/30 23:41, Vitaly Kuznetsov wrote:
> >>>Zhenzhong Duan writes:
> >>>
> There are cases where a guest tries to switch spinlocks to bare
On 2019/10/1 16:39, Vitaly Kuznetsov wrote:
Zhenzhong Duan writes:
On 2019/9/30 23:41, Vitaly Kuznetsov wrote:
Zhenzhong Duan writes:
There are cases where a guest tries to switch spinlocks to bare metal
behavior (e.g. by setting "xen_nopvspin" on XEN platform and
"hv_nopvspin" on
Zhenzhong Duan writes:
> On 2019/9/30 23:41, Vitaly Kuznetsov wrote:
>> Zhenzhong Duan writes:
>>
>>> There are cases where a guest tries to switch spinlocks to bare metal
>>> behavior (e.g. by setting "xen_nopvspin" on XEN platform and
>>> "hv_nopvspin" on HYPER_V).
>>>
>>> That feature is
On 2019/9/30 23:41, Vitaly Kuznetsov wrote:
Zhenzhong Duan writes:
There are cases where a guest tries to switch spinlocks to bare metal
behavior (e.g. by setting "xen_nopvspin" on XEN platform and
"hv_nopvspin" on HYPER_V).
That feature is missed on KVM, add a new parameter "nopvspin" to
Zhenzhong Duan writes:
> There are cases where a guest tries to switch spinlocks to bare metal
> behavior (e.g. by setting "xen_nopvspin" on XEN platform and
> "hv_nopvspin" on HYPER_V).
>
> That feature is missed on KVM, add a new parameter "nopvspin" to disable
> PV spinlocks for KVM guest.
>
There are cases where a guest tries to switch spinlocks to bare metal
behavior (e.g. by setting "xen_nopvspin" on XEN platform and
"hv_nopvspin" on HYPER_V).
That feature is missed on KVM, add a new parameter "nopvspin" to disable
PV spinlocks for KVM guest.
This new parameter is also intended
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