Re: [PATCH v4 07/30] xen/asm-generic: introdure nospec.h

[Julien Grall <julien@xxxxxxx>]

Hi Oleksii,

Title: Typo s/introdure/introduce/

On 05/02/2024 15:32, Oleksii Kurochko wrote:
> The <asm/nospec.h> header is similar between Arm, PPC, and RISC-V,
> so it has been moved to asm-generic.
I am not 100% convinced that moving this header to asm-generic is a good 
idea. At least for Arm, those helpers ought to be non-empty, what about 
RISC-V?
If the answer is they should be non-empty. Then I would consider to keep 
the duplication to make clear that each architecture should take their 
own decision in term of security.
The alternative, is to have a generic implementation that is safe by 
default (if that's even possible).
Cheers,

--
Julien Grall