Re: arm64: MPAM2_EL2 and MPAMHCR_EL2 are left UNKNOWN under arm64.nompam

[Bradley Morgan]

On 2 September 2026 16:26:55 BST, Xi Ruoyao <xry111 at xry111.site> wrote:
>On Thu, 2026-08-27 at 09:41 +0100, Ben Horgan wrote:
>> > not, could the caveat go the other way round: arm64.nompam is for
>> > systems where firmware ignores MPAM, and should only be set on a
>> > machine that does not boot without it?
>> 
>> Yes, seems fine.
>
>Sorry for the late reply.  This is indeed the original purpose for
>arm64.nompam, a dirty hack when we have no other ways to make the system
>boot.  If you think it causes an inconsistent state I'd not complain
>against adding a loud warning or something.

Sorry to impede in the discussion, would you like me to submit a patch for
that?

>
>

--- Thanks!
https://lore.kernel.org/all/EE579805-42F2-4C58-B752-F28779EEB717@grrlz.net/