linux-kernel - Re: [PATCH v7 0/6] Introduce CET supervisor state support

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Message-ID: <20250522075105.GF24938@noisy.programming.kicks-ass.net>
Date: Thu, 22 May 2025 09:51:05 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Dave Hansen <dave.hansen@...el.com>
Cc: Ingo Molnar <mingo@...nel.org>, Chao Gao <chao.gao@...el.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	tglx@...utronix.de, seanjc@...gle.com, pbonzini@...hat.com,
	rick.p.edgecombe@...el.com, weijiang.yang@...el.com,
	john.allen@....com, bp@...en8.de, chang.seok.bae@...el.com,
	xin3.li@...el.com, Aruna Ramakrishna <aruna.ramakrishna@...cle.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Eric Biggers <ebiggers@...gle.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Kees Cook <kees@...nel.org>, Maxim Levitsky <mlevitsk@...hat.com>,
	Mitchell Levy <levymitchell0@...il.com>,
	Nikolay Borisov <nik.borisov@...e.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Sohil Mehta <sohil.mehta@...el.com>,
	Stanislav Spassov <stanspas@...zon.de>,
	Uros Bizjak <ubizjak@...il.com>,
	Vignesh Balasubramanian <vigbalas@....com>,
	Zhao Liu <zhao1.liu@...el.com>
Subject: Re: [PATCH v7 0/6] Introduce CET supervisor state support

On Fri, May 16, 2025 at 08:20:54AM -0700, Dave Hansen wrote:

> It's getting into shape, but it has a slight shortage of reviews. For
> now, it's an all-Intel patch even though I _thought_ AMD had this
> feature too. 

Yeah, AMD should have this. While AMD does not implement IBT, they did
do implement SS, and as such, they should be having this stuff as well.