linux-kernel - Re: [PATCH 00/21] mm: ASI direct map management

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Message-ID: <00e7ff5e-fe6c-4edc-9bf8-2352321f74dc@intel.com>
Date: Wed, 1 Oct 2025 13:59:15 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Brendan Jackman <jackmanb@...gle.com>, Andy Lutomirski <luto@...nel.org>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>,
 Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
 Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>,
 Axel Rasmussen <axelrasmussen@...gle.com>, Yuanchu Xie <yuanchu@...gle.com>,
 Roman Gushchin <roman.gushchin@...ux.dev>
Cc: peterz@...radead.org, bp@...en8.de, dave.hansen@...ux.intel.com,
 mingo@...hat.com, tglx@...utronix.de, akpm@...ux-foundation.org,
 david@...hat.com, derkling@...gle.com, junaids@...gle.com,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, reijiw@...gle.com,
 rientjes@...gle.com, rppt@...nel.org, vbabka@...e.cz, x86@...nel.org,
 Yosry Ahmed <yosry.ahmed@...ux.dev>
Subject: Re: [PATCH 00/21] mm: ASI direct map management

On 9/24/25 07:59, Brendan Jackman wrote:
> Why is this the scope of the first series? The objective here is to
> reach a MVP of ASI that people can actually run, as soon as possible.

I had to ask ChatGPT what you meant by MVP. Minimum Viable Product?

So this series just creates a new address space and then ensures that
sensitive data is not mapped there? To me, that's a proof-of-concept,
not a bit of valuable functionality that can be merged upstream.

I'm curious how far the first bit of functionality that would be useful
to end users is from the end of this series.