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 8FF4C263C85 for ; Mon, 24 Feb 2025 18:57:28 +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=1740423448; cv=none; b=df2+tn2Je0ChiVqUpi+7OxCcoC3gO3vnBDD9BDodTZGJpBFauGqVopaDrm1ZsOErsPgqaxdBOajChJbXSOE/FXS9ujZB9TKCdDI27pF6PIMDpcZnsBdxCn7QkSdWoN20sy63ZR65ka6sttzbLiej0c0QSlImBYw/6/D3aIpRoAM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740423448; c=relaxed/simple; bh=t9mPDKkDP3Ii8BUvnj5o99mIEmgWPH8nX2vw+nFU9kY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pHOPzGHKkSfi8F96hwQuH6wpdO0jQnqN3IO/eisjRcTlZeDMPKM7+O6KE3yIOy2/jBoKjX33+R/hDdEkMYT7iy24YkL6FAkTTow9S65FN/7vM/uBXVRLJ4Oe/06zPErTGdvKjVqYhYX9yY5/YZuJjlUSLfcK1FkuAVJRWh9acR8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sbpINjw4; 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="sbpINjw4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0AB2C4CED6; Mon, 24 Feb 2025 18:57:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740423448; bh=t9mPDKkDP3Ii8BUvnj5o99mIEmgWPH8nX2vw+nFU9kY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=sbpINjw4vSKqypwmv0EJVpVg6OcSlesgDs67Fe4g1ltWYcXyEkl18uxBYErGTdexk mIMw5C3ktIvbKm8ylzAX2SFRMGUa+iL1FyASDsmNeMBgCLBn+Oa6WrmfmlRmiKxhwJ m3cAtys2Bq+cv/4x79RZU0VKHQQdsuHupTgacbJwtMsLxbyt6t+USSy+70C31z+9jz dzbFVeWDRcwbFS6D4hxpT2UO/eeXXj61YFPVIZFNuS0XmTHLg9wGDEhcn/blSRKTG4 IlXLrC5POqfCoDBCli0K5CEwpxZ89xUPykseEL24/kmpgEBAFlgJ+vpW//x/X508Yg jsRR94vp95HbA== Date: Mon, 24 Feb 2025 10:57:23 -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 v4 01/10] x86/cfi: Add warn option Message-ID: <202502241057.F1CE482@keescook> References: <20250224123703.843199044@infradead.org> <20250224124159.924496481@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: <20250224124159.924496481@infradead.org> On Mon, Feb 24, 2025 at 01:37:04PM +0100, Peter Zijlstra wrote: > Rebuilding with CFI_PERMISSIVE toggled is such a pain, esp. since > clang is so slow. > > Signed-off-by: Peter Zijlstra (Intel) Lovely :) Reviewed-by: Kees Cook -- Kees Cook