Re: [Xen-devel] [PATCH] x86/apicv: enhance posted-interrupt processing

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 21.02.17 at 07:19, <xuquan8@xxxxxxxxxx> wrote:
> On February 21, 2017 5:55 AM, Chao Gao wrote:
>>On Tue, Feb 21, 2017 at 04:11:53AM +0000, Xuquan (Quan Xu) wrote:
>>>The posted_intr_vector handler is not always pi_notification_interrupt.
>>>If the vt-d PI is not enabled, the handler is event_check_interrupt..
>>>The VCPU_KICK_SOFTIRQ bit is set in  pi_notification_interrupt , but not
>>event_check_interrupt..
>>>
>>OK. you are right. I think we can resolve it by replacing
>>event_check_interrupt with pi_notification_interrupt.
> 
> Sounds good to me. Note that there is more ' perfc_incr(ipis); ' in 
> event_check_interrupt().. I don't know what's the purpose..

That's a performance counter getting incremented (if such counters
are enabled in the first place).

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel