Re: [PATCH RFC V6 5/5] xen: Handle resumed instruction based on previous mem_event reply

[Razvan Cojocaru <rcojocaru@bitdefender.com>]

On 08/12/2014 06:20 PM, Jan Beulich wrote:
>>>> On 11.08.14 at 17:08, <rcojocaru@bitdefender.com> wrote:
>> --- a/xen/arch/x86/hvm/vmx/vmx.c
>> +++ b/xen/arch/x86/hvm/vmx/vmx.c
>> @@ -1699,6 +1699,18 @@ static void vmx_enable_msr_exit_interception(struct domain *d)
>>              vmx_enable_intercept_for_msr(v, msrs[i], MSR_TYPE_W);
>>  }
>>  
>> +static bool_t vmx_exited_by_nested_pagefault(void)
>> +{
>> +    unsigned long exit_qualification;
>> +
>> +    __vmread(EXIT_QUALIFICATION, &exit_qualification);
>> +
>> +    if ( (exit_qualification & EPT_GLA_FAULT) == 0 )
>> +        return 0;
>> +
>> +    return 1;
>> +}
> 
> As (I think) said on the previous version already - this would apparently
> benefit from being based on Tamas's recent work (slated to go in once
> the series got suitably acked).

I agree, that would be great. In the meantime, I just thought that the
patches should be self-sufficient.


Thanks,
Razvan Cojocaru