Re: [Xen-devel] Migration bug added by commit 2df1aa01bef7366798248ac6d03cfb42048b003d

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 29.06.15 at 17:14, <don.slutz@xxxxxxxxx> wrote:
> On 06/29/15 10:03, Paul Durrant wrote:
>> I think this patch should do it for now:
>>
>> diff --git a/xen/arch/x86/hvm/emulate.c b/xen/arch/x86/hvm/emulate.c
>> index a4d7225..cc6130c 100644
>> --- a/xen/arch/x86/hvm/emulate.c
>> +++ b/xen/arch/x86/hvm/emulate.c
>> @@ -183,7 +183,7 @@ static int hvmemul_do_io(
>>           else
>>           {
>>               rc = hvm_send_assist_req(s, &p);
>> -            if ( rc != X86EMUL_RETRY )
>> +            if ( rc != X86EMUL_RETRY || curr->domain->is_shutting_down )
> 
> I do not know enough about "is_shutting_down" to agree.  What is clear 
> is that
> this test is not the same as "!vcpu_start_shutdown_deferral(curr)".

Together with Paul's reply the main question appears to have
remained un-answered: Does the patch suggested by Paul address
the problem you observed?

Jan


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