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 E670A326935 for ; Tue, 11 Nov 2025 21:03:17 +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=1762895001; cv=none; b=BTaV528qN/w1UQm4X9OekvPyO2ophnwl9J+C1FaMdPTygtd5RmO7Thp5dWSIjH6xZ4JdSqGWuHxw945zcqpxT6U4W/itq4OvuaK9/X6+SnzAPVLeER/6+7/xEuazK3hAApsX+/8wx++DwuT/LzoBR1AAGtp7TlIccH0GaRmWpP4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762895001; c=relaxed/simple; bh=0Gri1Uktw4ue+faTiyay27rNA4xF2vqxS3yWyt/1K6A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=b3kpC5npVKr0oTrAuLnfQRz2TVrsI6mJUW5pqwx3vImM1yT9KV1zZ36Zk0RPyThDtYNND9ehaj61BSp+KIw+cWAT9lgxtu82wN+cTwQT+mzwykRcd1tG2+0eu1M8oHFJOz3rVbMZVvfNzWgE53o7Xbu7zGLqLRKTZZ59obUwXU4= 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=bXvXz3Jl; 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="bXvXz3Jl" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 294DD40E01A8; Tue, 11 Nov 2025 21:03:10 +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 TAZToRNXbOg1; Tue, 11 Nov 2025 21:02:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1762894978; bh=KgkHJOtKIepAScX0bEMUfY86toUrrHBXDDlRVihLwog=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=bXvXz3Jl07Nk2PW5dwUkhV9E/DTkuhaVb5G1/G049ot2BvkHNCWV8JIqVU7CEmSAF nfX/3DESmZTaAIjWTi9TW9olbCg7vjnGmJEWxMuhsE49ESAsiCslhajyJeTFrEsI91 aLCPJn/Wk1vOOhFdphrdnpzjaCY0bTYMmZR2bur2V0YaggYcfJkVFzeC2tFZy9z32D HRdv8G6KKCWJeQPyWR99bqattgYQ77MkLBI1EN+REJtwl2ygOwALk0t9hmUDM5vJkg yYB2McDByULojL3JvIE2PzxQ20FZcblTzNQLSu/jbrROBiifkL9VLHOq/+Kap+jQwo 0lmVD7sgqygFSU0eSRAipEIWvWugo13arWTMVBZ9VN93BqR054cWzWZcMkx9xGXKUp jp5CtACRGBbDv9+8SUJSXErsT+OlCItUQOudvW+GpRDfRxLijqha+A+I3fEA3n2XXb NQo8PcbIXdKrW7yZ1udDi5SwQl+MvHxFsEkdbkQ8EYgHCRT4vOwBf9TY22gqCkx/+k ShBWo+cOFGPT5pvBu6jwl4ybvQrPhB33KzU4R1s2/JGNfmuBuOB9A68+8hDD1pePJW AhOuvkBT2sKLvKZikA+JIc4LSqbFBiPuULsvgXX2S4afdrSf0p7VPfnzr8R+bYJH/m /i5myLfGW08NW2q5sWyLlI/U= Received: from zn.tnic (pd9530da1.dip0.t-ipconnect.de [217.83.13.161]) (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 UTF8SMTPSA id A8E7840E016E; Tue, 11 Nov 2025 21:02:51 +0000 (UTC) Date: Tue, 11 Nov 2025 22:02:41 +0100 From: Borislav Petkov To: Ard Biesheuvel Cc: Ard Biesheuvel , linux-kernel@vger.kernel.org, x86@kernel.org, kees@kernel.org, Michal Clapinski , Chris Li Subject: Re: [RFC PATCH] x86/boot/compressed: Disable physical KASLR when memmap= appears Message-ID: <20251111210241.GAaROkcWui7kjsF2WS@fat_crate.local> References: <20251106173019.1224443-2-ardb+git@google.com> <20251107205020.GEaQ5bjLIU1Y7ePsJY@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 Tue, Nov 11, 2025 at 05:52:58PM +0100, Ard Biesheuvel wrote: > Yes, better, although we should still clarify that only physical > randomization is affected. Right. I'm thinking we could take this fix for a spin next cycle to see who would cry out and why - ala "hey, you broke my super important memmap= use case with KASLR..." and then see what we'd end up committing... Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette