Re: [Xen-devel] [PATCH V3 2/2] xen: Introduce VM_EVENT_FLAG_SET_REGISTERS

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 09/28/2015 01:26 PM, Andrew Cooper wrote:
> On 28/09/15 11:16, Razvan Cojocaru wrote:
>> diff --git a/xen/include/public/vm_event.h b/xen/include/public/vm_event.h
>> index ff2f217..3e4efad 100644
>> --- a/xen/include/public/vm_event.h
>> +++ b/xen/include/public/vm_event.h
>> @@ -89,6 +89,12 @@
>>   * by the altp2m_idx response field if possible.
>>   */
>>  #define VM_EVENT_FLAG_ALTERNATE_P2M      (1 << 7)
>> +/*
>> + * Set the vCPU registers to the values in the  vm_event response.
>> + * Applies to EAX-EDX, ESP, EBP, ESI, EDI, R8-R15, EFLAGS, and EIP.
>> + * Requires the vCPU to be paused already (synchronous events only).
>> + */
> 
> The set registers are architecture specific, or will be if/when ARM
> gains support.
> 
> It is fine to list the architecture specific bits here (as there are no
> more appropriate places for it to live) but do explicitly call out that
> the 2nd sentence in x86 specific.
> 
> Otherwise, Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Will do in the next version.


Thanks for the review,
Razvan

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