On 30.05.2023 12:00, Andrew Cooper wrote:
> On 30/05/2023 10:18 am, Jan Beulich wrote:
>> On 26.05.2023 13:06, Andrew Cooper wrote:
>>> @@ -687,6 +697,32 @@ static bool __init retpoline_calculations(void)
>>> if ( safe )
>>> return true;
>>>
>>> +/*
>>> + * The meaning of th
On 30/05/2023 10:18 am, Jan Beulich wrote:
> On 26.05.2023 13:06, Andrew Cooper wrote:
>> @@ -687,6 +697,32 @@ static bool __init retpoline_calculations(void)
>> if ( safe )
>> return true;
>>
>> +/*
>> + * The meaning of the RSBA and RRSBA bits have evolved over time. The
On 26.05.2023 13:06, Andrew Cooper wrote:
> @@ -687,6 +697,32 @@ static bool __init retpoline_calculations(void)
> if ( safe )
> return true;
>
> +/*
> + * The meaning of the RSBA and RRSBA bits have evolved over time. The
> + * agreed upon meaning at the time of writin
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.
Synthesize the bits when missing.
Signed-off-by: Andrew Cooper
---
CC: Jan Beulich
CC: Roger Pau Monné
CC: Wei Liu
---
xen/arch/x86/incl
