From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 34EB9214219 for ; Wed, 19 Feb 2025 17:52:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739987544; cv=none; b=smyhPqWoeIraVYNhosQ02X7ZTqZvoaBbWIbvHMWKOBFZiBNm08zXQEENSMy2JC/NJ42QfW+QC0+bXdao0GvOlxEm7chFptUWBB0mnOZybogOOMDKdBUP6iTcOtZTKjOLHibstPXmKUeGCN8Tqe1KiPxmz6Uj/AkbH39/HVlLnw0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739987544; c=relaxed/simple; bh=T8kCvy+6tAgvsXxoAHr+ecyRGya1XAgh3KXwqLc911Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=DlvacE3J+apm9torab03qnDvKOVVW2u/0Xxa9D7tZBzFeog8KCIJkG2b5OQMMXPU/iGsJIRSmOgC2oWbYXmsYmCNYvrvtGHLoJo7EI+VFsMsb3C5ARlMmXb2B7AvKAtkvxhodBKoZTUmLNyI7dOa041e+xgBRtHW9Do8M+C83Y8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YXUpHwFh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YXUpHwFh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8BE21C4CED1; Wed, 19 Feb 2025 17:52:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739987543; bh=T8kCvy+6tAgvsXxoAHr+ecyRGya1XAgh3KXwqLc911Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YXUpHwFhHnV8qAfMGJhFOKWOIK3LVNIICUM6P9tQETe2ee5gk+TGkxN2yQjD2lfAx ZTXku5DXk6OWICNZ+P4OH3YEE6kNZaXFUN7fp+RrHOiTx42dg8ZnD7rXhgi9FspdQ7 rmRToJAr7k/ZHiVSdMJsI3diGZRgYnG1iavYW1AI2xJm2D3WoiCHINm4Fi4A3+9/yE 5HkRLQP/0SspxRItBxevENe1DXs2N3PIiMIxQ5cu/Nv5xx/SeY1rkmkcqnccfg4Hmv c7vVPPJOHSDn8TTf3PZqHSyocRRoBmOQZg6CADPYKpEAeZGKyskDDBKKcYRQEOaV31 AhLfhPSqpN2Ag== Date: Wed, 19 Feb 2025 09:52:20 -0800 From: Kees Cook To: Peter Zijlstra Cc: x86@kernel.org, linux-kernel@vger.kernel.org, alyssa.milburn@intel.com, scott.d.constable@intel.com, joao@overdrivepizza.com, andrew.cooper3@citrix.com, jpoimboe@kernel.org, jose.marchesi@oracle.com, hjl.tools@gmail.com, ndesaulniers@google.com, samitolvanen@google.com, nathan@kernel.org, ojeda@kernel.org, alexei.starovoitov@gmail.com, mhiramat@kernel.org, jmill@asu.edu Subject: Re: [PATCH v3 03/10] x86/traps: Decode 0xEA #UD Message-ID: <202502190952.2F7E63C0C@keescook> References: <20250219162107.880673196@infradead.org> <20250219163514.581527735@infradead.org> 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: <20250219163514.581527735@infradead.org> On Wed, Feb 19, 2025 at 05:21:10PM +0100, Peter Zijlstra wrote: > FineIBT will start using 0xEA as #UD > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Kees Cook -- Kees Cook