Re: [bisected] KVM in 3.19-rc1 is completely broken

["Chen, Tiejun" <tiejun.chen@intel.com>]

On 2014/12/25 8:55, Chen, Tiejun wrote:
>
>
> On 2014/12/25 1:11, Andy Lutomirski wrote:
>> On Wed, Dec 24, 2014 at 12:23 AM, Chen, Tiejun <tiejun.chen@intel.com>
>> wrote:
>>> On 2014/12/24 5:29, Andy Lutomirski wrote:
>>>>
>>>> On Tue, Dec 23, 2014 at 1:13 PM, Paolo Bonzini <pbonzini@redhat.com>
>>>> wrote:
>>>>>
>>>>>
>>>>>> I can reproduce it using the same steps on a Sandy Bridge laptop,
>>>>>> with
>>>>>> whatever QEMU is packaged in Fedora 21.  I attached the config.
>>>>>>
>>>>>> I also submitted a virtme update for Fedora Rawhide and 21 (20 is
>>>>>> still building) in case it helps.  The build is here:
>>>>>>
>>>>>> http://koji.fedoraproject.org/koji/buildinfo?buildID=600732
>>>>>
>>>>>
>>>>> The other reporter bisected it to
>>>>> 0e60b0799fedc495a5c57dbd669de3c10d72edd2.  Can you try its parent?
>>>>
>>>>
>>>> That's what I bisected it to.  The parent works.
>>>>
>>>>>
>>>>> Also, does it break with 3.18 host and 3.19-rc1 guest, or with
>>>>> 3.19-rc1 host and 3.18 guest?  (Sorry I should do this myself
>>>>> but I'm a bit swamped due to vacation until Jan 6th).
>>>>>
>>>>
>>>> The breakage is with 3.17.7-something L0 and the same test kernel as
>>>> L1 and L2.  I think it breaks the same way with 3.19-rc1 as host and
>>>> guest without any nesting, but that's awkward to test right now.
>>>>
>>>
>>>
>>> Andy,
>>>
>>> Could you try this?
>>>
>>> Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
>>
>> I applied it by hand, and it survives extremely light testing.
>>
>> Tested-by: Andy Lutomirski <luto@amacapital.net>
>>
>
> Looks good so thanks for your validation.
>

I refine that I posted that fix in another thread since looks that will 
broken !next case. And I myself already run those test instructions you 
showed previously, now looks good.

Tiejun