From mboxrd@z Thu Jan  1 00:00:00 1970
From: Razvan Cojocaru <rcojocaru@bitdefender.com>
Subject: Re: [PATCH RFC V7 4/5] xen,
 libxc: Request page fault injection via libxc
Date: Tue, 26 Aug 2014 17:24:45 +0300
Message-ID: <53FC98AD.6010104@bitdefender.com>
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To: Jan Beulich <JBeulich@suse.com>
Cc: kevin.tian@intel.com, ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, andrew.cooper3@citrix.com, eddie.dong@intel.com, xen-devel@lists.xen.org, jun.nakajima@intel.com, ian.jackson@eu.citrix.com
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On 08/26/2014 05:13 PM, Jan Beulich wrote:
>>>> On 13.08.14 at 17:28, <rcojocaru@bitdefender.com> 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