Re: [Xen-devel] [PATCH v8 3/9] xen/x86: support per-domain flag for xpti

[Juergen Gross <jgross@xxxxxxxx>]

On 18/04/18 17:29, Jan Beulich wrote:
>>>> On 18.04.18 at 10:30, <jgross@xxxxxxxx> wrote:
>> --- a/xen/arch/x86/mm/shadow/multi.c
>> +++ b/xen/arch/x86/mm/shadow/multi.c
>> @@ -967,7 +967,7 @@ static int shadow_set_l4e(struct domain *d,
>>          sh_put_ref(d, osl3mfn, paddr);
>>      }
>>  
>> -    if ( !cpu_has_no_xpti )
>> +    if ( is_pv_domain(d) && d->arch.pv_domain.xpti )
>>          /*
>>           * Lazy flushing is enough: either we do a TLB flush right 
>> afterwards
>>           * which will pick up the new root page table on all affected cpus
> 
> How come the is_pv_domain() is appearing only here?

It is mandatory for testing the per-domain xpti flag. I could add it in
patch 1 already if you like that better.


Juergen

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