From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (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 3D1A7156678; Wed, 3 Apr 2024 20:41:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712176896; cv=none; b=sZRoiz8rvKQ/5nzpsFM+xngGzddXhRjJufvbrS7ALKZZ8Uigx682PaKN9y/74jaCdEZTf9efMus7xp4WWGb7cv7mTcxrwEGZWsKP9482SW6tH8yPXSlvaSN2P0NmTS5hES6xzpGPYpyA6HabrfQmSpXUTqcWWrJVVSMNQxzZBiQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712176896; c=relaxed/simple; bh=WBi+jMy/cPJPoUYrHvBCMEz4c/n+8y/p4u1tYF4xRno=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=RqqxbuK7r7HeedaDSWDa5OjMRGOyV5/Q8Gv56WWalndJf6dPKb/kc5w3CcJvDWiw4gBPBgUM33kTEKuAsaVDYfWIuQXMLOmowbykh+vVFv4UuiI8T14/QO5A9G0oc5fmiJf1fMi/R9dLEQUzsOGpqrsnRcz5v5auatjy28nuRPs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=BySGX9+L; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="BySGX9+L" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id BE54340E019C; Wed, 3 Apr 2024 20:41:31 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id zNPoDRuXVeZZ; Wed, 3 Apr 2024 20:41:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1712176887; bh=SudQJGK2u0OMPdgM7lq3lvNT9ANcyHz0cK1GxOTp9BE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=BySGX9+LYW3pLRDpGHmCEpj8LlqR+z//OiqByTtalHc4xBd75tW8b5V0Jr34TA/3W yjx9cCKdcBvMFuXU3C+ZU3d0CrJQnoG5nVrD8Pns+U9MMXhmfZeETmT51nvXb4DTB9 j0qZKmvJnrw4uIE57DNd8oQldFYPBtIedgZDFUSCnQsRrwdrvtjn2eOHv/E1nbMSRh NdhKh630+Ly9kS2clCBCQZzJbGvhFdKIOm3d8hl0GEzZXcp1lIOILFyl7GYJ9aRsPt +j+PXD9NCDmj/8ERs111FN4tm4IPGRHXOEb1WZoljJdiljRfy6yn0sibBrlCk2gtYg qo1G76qZ9SZNgFocPNU+3unM2u2ryoMyrAIbn2K0ucnWtFjZPQmJ4gtvt57lhcwyC9 9rlSzswBDovoHu+9YC5MdOjBsbA9UGVnfAtnKhii6hUIUqkUBbWRpNGU7gXqtaQ+aT JtkDXdYYpE51eecfTba+NJMpfcLdm6e4rRKeVz8t0KuW2GY/8Vrm1YZiRcSA1FAVh5 MII2IBShIxaFWToN0C9aUb4IjiJOcZI4yv1gvOC0S5CZiCDV/Uuvs0uLOW9kbGxmho W6VsPS8/2tsBFKH8jP1tGZKJ146cfvI6OfRhUa6nlQzuQo3/rfJgkqi+/WLOZO0PEr DUHg+CcFLgIzLVRHRfsBCYYk= Received: from zn.tnic (p5de8ecf7.dip0.t-ipconnect.de [93.232.236.247]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 6D26440E00F4; Wed, 3 Apr 2024 20:41:18 +0000 (UTC) Date: Wed, 3 Apr 2024 22:41:13 +0200 From: Borislav Petkov To: Klara Modin Cc: Josh Poimboeuf , "Kaplan, David" , Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-tip-commits@vger.kernel.org" , "Peter Zijlstra (Intel)" , "x86@kernel.org" , David Howells Subject: Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime Message-ID: <20240403204113.GLZg2-6f0nH0Ne9CQt@fat_crate.local> References: <20240104131210.GDZZauqoeKoZGpYwDd@fat_crate.local> <20240104132446.GEZZaxnrIgIyat0pqf@fat_crate.local> <20240104132623.GFZZax/wyf5Y3rMX5G@fat_crate.local> <20240207175010.nrr34b2pp3ewe3ga@treble> <20240207185328.GEZcPRqPsNInRXyNMj@fat_crate.local> <20240207194919.qw4jk2ykadjn5d4e@treble> <20240212104348.GCZcn2ZPr445KUyQ7k@fat_crate.local> <78e0d19c-b77a-4169-a80f-2eef91f4a1d6@gmail.com> <20240403173059.GJZg2SUwS8MXw7CdwF@fat_crate.local> 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=utf-8 Content-Disposition: inline In-Reply-To: On Wed, Apr 03, 2024 at 10:26:19PM +0200, Klara Modin wrote: > Probably, I don't have much knowledge about this stuff. The machine can at > least be useful for testing still :) I wouldn't use it if I were you as it wouldn't even justify the electricity wasted. No one cares about 32-bit x86 kernels anymore and we barely keep them alive. It'll be a lot more helpful if you'd test 64-bit kernels on 64-bit hw. :-) Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette