Re: [PATCH RFC 00/19] mm: Add __GFP_UNMAPPED

From: Borislav Petkov

Date: Fri Mar 06 2026 - 09:57:53 EST


On Thu, Mar 05, 2026 at 11:16:07AM +0000, Brendan Jackman wrote:
> Ultimately the fact that we have KPTI for 32-bit makes it sound like we
> would also want ASI for 32-bit, so I guess I would still want to add a
> GFP flag to support that on 32-bit. But that's a pretty futuristic
> problem, I would say we should focus on __GFP_UNMAPPED in isolation
> right now.

I'd wait until someone really really presents a valid use case to not move to
64-bit. And then justify the effort for adding and supporting ASI on 32-bit.

--
Regards/Gruss,
Boris.

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