On 17/06/2020 12:41, Jan Beulich wrote:
> On 17.06.2020 13:28, Andrew Cooper wrote:
>> We actually have AVX512 disabled by default in XenServer. The perf
>> implications of letting 1 guest play with it is very severe.
>>
>> Now I think about it, I'm tempted to recommend it moves out of default
>>
On 17.06.2020 13:28, Andrew Cooper wrote:
> We actually have AVX512 disabled by default in XenServer. The perf
> implications of letting 1 guest play with it is very severe.
>
> Now I think about it, I'm tempted to recommend it moves out of default
> generally.
Hmm, I'm tempted to ask whether yo
On 17/06/2020 12:24, Jan Beulich wrote:
> On 17.06.2020 13:16, Andrew Cooper wrote:
>> On 17/06/2020 11:32, Jan Beulich wrote:
>>> On 16.06.2020 18:15, Andrew Cooper wrote:
On 16/06/2020 10:33, Jan Beulich wrote:
> On 15.06.2020 16:15, Andrew Cooper wrote:
>> @@ -479,6 +497,18 @@ int x
On 17.06.2020 13:16, Andrew Cooper wrote:
> On 17/06/2020 11:32, Jan Beulich wrote:
>> On 16.06.2020 18:15, Andrew Cooper wrote:
>>> On 16/06/2020 10:33, Jan Beulich wrote:
On 15.06.2020 16:15, Andrew Cooper wrote:
> @@ -479,6 +497,18 @@ int xc_cpuid_apply_policy(xc_interface *xch,
>
On 17/06/2020 11:32, Jan Beulich wrote:
> On 16.06.2020 18:15, Andrew Cooper wrote:
>> On 16/06/2020 10:33, Jan Beulich wrote:
>>> On 15.06.2020 16:15, Andrew Cooper wrote:
@@ -479,6 +497,18 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t
domid, bool restore,
goto
On 16.06.2020 18:15, Andrew Cooper wrote:
> On 16/06/2020 10:33, Jan Beulich wrote:
>> On 15.06.2020 16:15, Andrew Cooper wrote:
>>> @@ -479,6 +497,18 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t
>>> domid, bool restore,
>>> goto out;
>>> }
>>>
>>> +/*
>>> + * A
On 16/06/2020 10:33, Jan Beulich wrote:
> On 15.06.2020 16:15, Andrew Cooper wrote:
>> @@ -479,6 +497,18 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t
>> domid, bool restore,
>> goto out;
>> }
>>
>> +/*
>> + * Account for feature which have been disabled by defau
On 15.06.2020 16:15, Andrew Cooper wrote:
> @@ -479,6 +497,18 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t
> domid, bool restore,
> goto out;
> }
>
> +/*
> + * Account for feature which have been disabled by default since Xen
> 4.13,
> + * so migrated-in VM