On 14.06.2023 19:25, Andrew Cooper wrote:
> On 13/06/2023 10:30 am, Jan Beulich wrote:
>> On 12.06.2023 18:13, Andrew Cooper wrote:
>>> @@ -593,15 +596,93 @@ static bool __init retpoline_calculations(void)
>>> return false;
>>>
>>> /*
>>> - * RSBA may be set by a hypervisor to i
On 13/06/2023 10:30 am, Jan Beulich wrote:
> On 12.06.2023 18:13, Andrew Cooper wrote:
>> @@ -593,15 +596,93 @@ static bool __init retpoline_calculations(void)
>> return false;
>>
>> /*
>> - * RSBA may be set by a hypervisor to indicate that we may move to a
>> - * processor
On 12.06.2023 18:13, Andrew Cooper wrote:
> @@ -593,15 +596,93 @@ static bool __init retpoline_calculations(void)
> return false;
>
> /*
> - * RSBA may be set by a hypervisor to indicate that we may move to a
> - * processor which isn't retpoline-safe.
> + * The meaning
In order to level a VM safely for migration, the toolstack needs to know the
RSBA/RRSBA properties of the CPU, whether or not they happen to be enumerated.
See the code comment for details.
Signed-off-by: Andrew Cooper
---
CC: Jan Beulich
CC: Roger Pau Monné
CC: Wei Liu
v3:
* Add a taint fo
