From: Keir Fraser <keir.xen@gmail.com>
To: "Zhang, Yang Z" <yang.z.zhang@intel.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Cc: "Qiu, Shuang" <shuang.qiu@intel.com>,
"Zhang, Xiantao" <xiantao.zhang@intel.com>,
Jan Beulich <jbeulich@suse.com>
Subject: Re: use tasklet to handle init/sipi?
Date: Tue, 26 Mar 2013 07:38:37 +0000 [thread overview]
Message-ID: <CD7700FD.1BBCE%keir.xen@gmail.com> (raw)
In-Reply-To: <A9667DDFB95DB7438FA9D7D576C3D87E099F2122@SHSMSX101.ccr.corp.intel.com>
On 26/03/2013 07:17, "Zhang, Yang Z" <yang.z.zhang@intel.com> wrote:
>>> Oh, I see. Well I think it is fine to have
>>> vlapic_schedule_init_sipi_tasklet() return X86EMUL_OKAY rather than
>>> X86EMUL_RETRY. We used to need to return RETRY, but the code got simplified
>>> and now it is actually unnecessary.
>>>
>>> That should make your patch a lot simpler eh? ;)
>>
>> Given that you ignore the return code on the apicv call path, is there
>> currently a bug at all for you? Seems what is there already must work
>> for you?
> It do cause bug after we change to use seabios. For seabios, it will send
> INIT/SIPI to all vcpus via broadcasting. And there only one vcpu is waken up
> via tasklet with current logic. That's the reason why I want to wakeup all
> vcpus on one callback.
> Just change X86EMUL_RETRY to OK cannot solve the problem. still need the logic
> I mentioned above.
Ok, wait a sec, I will sort out a patch for you to try...
-- Keir
next prev parent reply other threads:[~2013-03-26 7:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-25 5:31 use tasklet to handle init/sipi? Zhang, Yang Z
2013-03-25 6:29 ` Keir Fraser
2013-03-25 6:55 ` Zhang, Yang Z
2013-03-25 8:05 ` Keir Fraser
2013-03-25 12:16 ` Zhang, Yang Z
2013-03-25 12:38 ` Jan Beulich
2013-03-25 12:39 ` Keir Fraser
2013-03-26 3:15 ` Zhang, Yang Z
2013-03-26 6:07 ` Keir Fraser
2013-03-26 6:14 ` Zhang, Yang Z
2013-03-26 7:00 ` Keir Fraser
2013-03-26 7:11 ` Keir Fraser
2013-03-26 7:17 ` Zhang, Yang Z
2013-03-26 7:38 ` Keir Fraser [this message]
2013-03-26 7:41 ` Zhang, Yang Z
2013-03-26 7:55 ` Keir Fraser
2013-03-26 8:02 ` Keir Fraser
2013-03-28 1:18 ` Zhang, Yang Z
2013-03-28 6:39 ` Qiu, Shuang
2013-03-28 11:48 ` Keir Fraser
2013-03-28 15:29 ` Jan Beulich
2013-03-28 20:02 ` Keir Fraser
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