linux-kernel - Re: [PATCH 00/26] Address Space Isolation (ASI) 2024

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Message-ID: <CA+i-1C1Gop4uva4dHv1gKtnS_8tvw8r50M7uf38Zbui07OoQwg@mail.gmail.com>
Date: Wed, 11 Sep 2024 18:37:14 +0200
From: Brendan Jackman <jackmanb@...gle.com>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>, 
	Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>, 
	Alexandre Chartre <alexandre.chartre@...cle.com>, 
	Jan Setje-Eilers <jan.setjeeilers@...cle.com>, Catalin Marinas <catalin.marinas@....com>, 
	Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Mel Gorman <mgorman@...e.de>, 
	Lorenzo Stoakes <lstoakes@...il.com>, David Hildenbrand <david@...hat.com>, Vlastimil Babka <vbabka@...e.cz>, 
	Michal Hocko <mhocko@...nel.org>, Juri Lelli <juri.lelli@...hat.com>, 
	Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, 
	Steven Rostedt <rostedt@...dmis.org>, Valentin Schneider <vschneid@...hat.com>, Paul Turner <pjt@...gle.com>, 
	Reiji Watanabe <reijiw@...gle.com>, Junaid Shahid <junaids@...gle.com>, Ofir Weisse <oweisse@...gle.com>, 
	Yosry Ahmed <yosryahmed@...gle.com>, Patrick Bellasi <derkling@...gle.com>, 
	KP Singh <kpsingh@...gle.com>, Alexandra Sandulescu <aesa@...gle.com>, 
	Matteo Rizzo <matteorizzo@...gle.com>, Jann Horn <jannh@...gle.com>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	kvm@...r.kernel.org, Dennis Zhou <dennis@...nel.org>
Subject: Re: [PATCH 00/26] Address Space Isolation (ASI) 2024

On Fri, 12 Jul 2024 at 19:00, Brendan Jackman <jackmanb@...gle.com> wrote:
>
> Overview
> ========
> This RFC demonstrates an implementation of Address Space Isolation
> (ASI), similar to Junaid Shahid’s proposal from 2022 [1].

Hi all,

I'll be discussing this series at the x86 MC at LPC next week. I
didn't get any high-level feedback so now would be a great time to
take a look and see if you have any thoughts about the basic
structure.

There are some bugs in this code but for an RFC it's basically
representative enough of what ASI will eventually look like.

In case it piques your interest here is some performance data I've
just gathered:

https://gist.github.com/bjackman/673415ee46fab01aa8d5f6ab1321b5b5