Re: [PATCH 1/2] xen/*/nospec: Provide common versions of evaluate_nospec/block_speculation

[Julien Grall <julien@xxxxxxx>]

Hi Andrew,

On 04/03/2024 16:10, Andrew Cooper wrote:
> It is daft to require all architectures to provide empty implementations of
> this functionality.
Oleksii recenlty sent a similar patch [1]. This was pushed back because 
from naming, it sounds like the helpers ought to be non-empty on every 
architecture.
It would be best if asm-generic provides a safe version of the helpers. 
So my preference is to not have this patch. This can of course change if 
I see an explanation why it is empty on Arm (I believe it should contain 
csdb) and other arch would want the same.
Cheers,

[1] 
5889d7a5fa81722472f95cc1448af0be8f359a7d.1707146506.git.oleksii.kurochko@xxxxxxxxx
--
Julien Grall