Hi, Baibir
sorry for late responce, I missed reading your mail.
在 16/7/6 18:54, Balbir Singh 写道:
On Tue, 2016-06-28 at 10:43 -0400, Pan Xinhui wrote:
This is to fix some lock holder preemption issues. Some other locks
implementation do a spin loop before acquiring the lock itself. Curre
On Tue, 2016-06-28 at 10:43 -0400, Pan Xinhui wrote:
> This is to fix some lock holder preemption issues. Some other locks
> implementation do a spin loop before acquiring the lock itself. Currently
> kernel has an interface of bool vcpu_is_preempted(int cpu). It take the cpu
On 2016年07月06日 16:32, Wanpeng Li wrote:
2016-07-06 15:58 GMT+08:00 Peter Zijlstra :
On Wed, Jul 06, 2016 at 02:46:34PM +0800, Wanpeng Li wrote:
SO it's easy for ppc to implement such interface. Note that yield_count is
set by powerVM/KVM.
and only pSeries can run a guest for now. :)
I also re
2016-07-06 15:58 GMT+08:00 Peter Zijlstra :
> On Wed, Jul 06, 2016 at 02:46:34PM +0800, Wanpeng Li wrote:
>> > SO it's easy for ppc to implement such interface. Note that yield_count is
>> > set by powerVM/KVM.
>> > and only pSeries can run a guest for now. :)
>> >
>> > I also review x86 related co
On Wed, Jul 06, 2016 at 02:46:34PM +0800, Wanpeng Li wrote:
> > SO it's easy for ppc to implement such interface. Note that yield_count is
> > set by powerVM/KVM.
> > and only pSeries can run a guest for now. :)
> >
> > I also review x86 related code, looks like we need add one hyer-call to get
> >
Cc Paolo, kvm ml
2016-07-06 12:58 GMT+08:00 xinhui :
> Hi, wanpeng
>
> On 2016年07月05日 17:57, Wanpeng Li wrote:
>>
>> Hi Xinhui,
>> 2016-06-28 22:43 GMT+08:00 Pan Xinhui :
>>>
>>> This is to fix some lock holder preemption issues. Some other locks
>>> implementation do a spin loop before acquiring t
Hi, wanpeng
On 2016年07月05日 17:57, Wanpeng Li wrote:
Hi Xinhui,
2016-06-28 22:43 GMT+08:00 Pan Xinhui :
This is to fix some lock holder preemption issues. Some other locks
implementation do a spin loop before acquiring the lock itself. Currently
kernel has an interface of bool vcpu_is_preempted(
Hi Xinhui,
2016-06-28 22:43 GMT+08:00 Pan Xinhui :
> This is to fix some lock holder preemption issues. Some other locks
> implementation do a spin loop before acquiring the lock itself. Currently
> kernel has an interface of bool vcpu_is_preempted(int cpu). It take the cpu
> as parameter and retur
This is to fix some lock holder preemption issues. Some other locks
implementation do a spin loop before acquiring the lock itself. Currently
kernel has an interface of bool vcpu_is_preempted(int cpu). It take the cpu
as parameter and return true if the cpu is preempted. Then kernel can break
the s
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