From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E8CD241693; Thu, 22 May 2025 07:51:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747900287; cv=none; b=ATQsY/c2WzF7fv3kov/dlPIPykoGzjzOId1IWEVQ/Wwmf8QxPeikP8Prt/hETTr6M01dZgLIbQOTMMQH4o1n09N09Vo25Eynic53SimUKd3Fr4fdqBWwADo8YyaoblLoAS/MvhZw6cGLODOUsGEe97Ze+67FQFvFj3ux6z4MQHE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747900287; c=relaxed/simple; bh=/aYhT8vM2cDXmeV1vWj3lHW7/qM3cYogO7PhzIceLb4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=lNBDeqYKCCcXh6yRrwIrCGyNjHjU2DhtRy3LELuAsqsRU+HCIaghMW6n1UhOcpT7hKIpsMkK4+RxMMjU36c9wOhPIRWVDnmWGMmunttrFFXc257lu6/v0+r8WbYrCn+Semsd/WMGl3P/OmgIE5prVJm3aBeEQ42QwFry0/JyFe4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=ikkB023H; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ikkB023H" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=JNtiODZQ5XMXnuwJKYtkx+44LK5XAKVKSFPKx4Ql4GM=; b=ikkB023HEBCMo4GcGGzELvxPza AQRWbHZzoFQU6IVmFzVLnRytXGjtKXMy7QjSEMtI31OtlyxHvZNnoerklamCBbO5vsCwrAfB5HAZH fyB2avBm5YOl4QSZgvdGee7qXJG95CXdHswEKs1Q6TR238al9kdf/KxCqpZTOiZyfhgEAsE1PQCOG ZjnC9+vfNMYgrz/037KDvrgFZAi8n1MgO4sumlF00r+HcXvUEtCejtwQ1pD1UX+akbJmqktlKOUEu aNXZ7PPwHra4So2z87WImFQm/0fs+lBIT6IUgrZ81XwkKjhtBNyXOAynN9Pk+tTFd2AZTGEN+fHXi VV5wFUSg==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1uI0hm-00000005nXa-2sLP; Thu, 22 May 2025 07:51:06 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 00DBE300677; Thu, 22 May 2025 09:51:05 +0200 (CEST) Date: Thu, 22 May 2025 09:51:05 +0200 From: Peter Zijlstra To: Dave Hansen Cc: Ingo Molnar , Chao Gao , x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, tglx@linutronix.de, seanjc@google.com, pbonzini@redhat.com, rick.p.edgecombe@intel.com, weijiang.yang@intel.com, john.allen@amd.com, bp@alien8.de, chang.seok.bae@intel.com, xin3.li@intel.com, Aruna Ramakrishna , Dave Hansen , Eric Biggers , "H. Peter Anvin" , Ingo Molnar , Kees Cook , Maxim Levitsky , Mitchell Levy , Nikolay Borisov , Oleg Nesterov , Samuel Holland , Sohil Mehta , Stanislav Spassov , Uros Bizjak , Vignesh Balasubramanian , Zhao Liu Subject: Re: [PATCH v7 0/6] Introduce CET supervisor state support Message-ID: <20250522075105.GF24938@noisy.programming.kicks-ass.net> References: <20250512085735.564475-1-chao.gao@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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.