Re: [PATCH v10 15/15] x86/cpu: Enable LASS by default during CPU initialization

Edgecombe, Rick P
2025-10-07T18:42:58Z

On Mon, 2025-10-06 at 23:51 -0700, Sohil Mehta wrote:
> Linear Address Space Separation (LASS) mitigates a class of side-channel
> attacks that rely on speculative access across the user/kernel boundary.
> Enable it by default if the platform supports it.
>
> While at it, remove the comment above the SMAP/SMEP/UMIP/LASS setup
> instead of updating it, as the whole sequence is quite self-explanatory.
>
> Signed-off-by: Sohil Mehta <sohil.mehta@intel.com>

Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>