From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 BEF0824503E; Fri, 14 Feb 2025 09:54:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739526862; cv=none; b=Zy27XQ0CbIUsGofPD3TovWm95jWI/FEGsEEhGP+NAx3Jq7w8gPgOreOX4IYvnH1M94x3up6Ozf0pdn9iix9goEojwhHqQZG1n6CwPGBkI1Bd+NVcxE3ETnGSs5qfU2XKu5clxDmRHfh+Rs8ZYV4RuAQCE3maEJGO5fG4fbXjZd0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739526862; c=relaxed/simple; bh=C2xnOOK8duynixcfdCDbebd03W+WelpWQHQj6LDNHyg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Oto6O5UU27yulPzYSSj0liJ0UyHcXOMAY8/esYPeXbOlp7KQDRNGvCOZ35AWY8I5flFoaVPcJ3GArHbHXNSqOcEz9Ulr/vZqAEVtdx6qZpdb+EcKZQH20M60KmiLY9rt7zx42C6tCPvzAkL6G8ujMOUFnemz0T4zGhclEFT77IY= 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=Imo3C/Sk; arc=none smtp.client-ip=90.155.92.199 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="Imo3C/Sk" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=C2xnOOK8duynixcfdCDbebd03W+WelpWQHQj6LDNHyg=; b=Imo3C/SkB/9e+GYQxujIZ1xjV3 JI1Xu5XgBGRwDcogWEFQY1+4fJJJ6S1Mkev1BQaU97wCmLzY4PbnIgtFkc8oLqep4GeqrRJdJJwqu iQjREi6f+wtKxeh18XnwJ4eXUuWXwPlIB3wsQrU5I4VfbdMWbmH/kRSaMCcuPFxk/6O12iwe3bNu3 iJ61cDVeb/pbL8IfIsymXyK5/0+GXDX5KebKgyxuhxQQPnKjbtb4AeNpZxc+E7P+19dg8dAMg4C90 wjpFp2W9UM2enfW14aPI1SPq0sTm1xOg9rIq0lvudRewTJkryKSlP0q8EaZuSVYDa5gbSB5Te/FO1 YFlPWNyA==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tisOn-00000001Dtx-1zHc; Fri, 14 Feb 2025 09:54:17 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 1114330050D; Fri, 14 Feb 2025 10:54:17 +0100 (CET) Date: Fri, 14 Feb 2025 10:54:16 +0100 From: Peter Zijlstra To: Andrew Cooper Cc: jannh@google.com, jmill@asu.edu, joao@overdrivepizza.com, kees@kernel.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, luto@kernel.org, samitolvanen@google.com Subject: Re: [RFC] Circumventing FineIBT Via Entrypoints Message-ID: <20250214095416.GE21726@noisy.programming.kicks-ass.net> References: 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 Thu, Feb 13, 2025 at 01:31:30AM +0000, Andrew Cooper wrote: > But, FRED support is slated for PantherLake/DiamondRapids which haven't > shipped yet, so are no use to the problem right now. FRED also fixes this IBT 'oopsie' IIRC.