Re: [Xen-devel] [PATCH RFC V7 4/5] xen, libxc: Request page fault injection via libxc

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 08/26/2014 05:13 PM, Jan Beulich wrote:
>>>> On 13.08.14 at 17:28, <rcojocaru@xxxxxxxxxxxxxxx> wrote:
>> --- a/xen/include/asm-x86/hvm/domain.h
>> +++ b/xen/include/asm-x86/hvm/domain.h
>> @@ -141,6 +141,14 @@ struct hvm_domain {
>>       */
>>      uint64_t sync_tsc;
>>  
>> +    /* Memory introspection page fault injection data. */
>> +    struct {
>> +        uint64_t address_space;
>> +        uint64_t virtual_address;
>> +        uint32_t errcode;
>> +        bool_t valid;
>> +    } fault_info;
> 
> Sorry for noticing this only now, but how can this be a per-domain
> thing rather than a per-vCPU one?

The requirement for our introspection application has simply been to
bring back in a swapped-out page, regardless of what VCPU ends up
actually doing it.


Thanks,
Razvan Cojocaru

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