From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 67C641E505; Thu, 16 Jan 2025 05:27:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.95.11.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737005230; cv=none; b=tJFLZU97ZMq77SMprjcTPTvBerGxOhBxHpx34W8yv/zZB8ZWepxbwz2nBJeRlF9fnXS2gih3zs+kkseQMcCLfMbGpw2NLJO9MKjutgTkT+HO9xdwYbvBc6w1l9L7ev2N37BpWeOIPFsL23ymYEBlh5a6wfHuVbmumktuayQe4DU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737005230; c=relaxed/simple; bh=BIEFozehT/2S6vOKwqsPOpRkNqkCyQdO8QRALd2o8P0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rz5JWWDZfDt9qHKTIH5xUE/Tw5Ep0I4+t6ynhYD/19fLY5Fa9PWLW4skZU5e35N098gBdFP/dFF6dXUhpXLlGxiQdSwDKmeJ0bTIxdv3L7DA5zltoKh/Q2mExIGysxiDGENXou0sZrSgusCF9X5EO8qfC1oz6hB50VH00YwJQo0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.client-ip=213.95.11.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id C80B568BEB; Thu, 16 Jan 2025 06:26:55 +0100 (CET) Date: Thu, 16 Jan 2025 06:26:55 +0100 From: Christoph Hellwig To: Kees Cook Cc: Lorenzo Stoakes , Jeff Xu , akpm@linux-foundation.org, jannh@google.com, torvalds@linux-foundation.org, adhemerval.zanella@linaro.org, oleg@redhat.com, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, jorgelo@chromium.org, sroettger@google.com, ojeda@kernel.org, adobriyan@gmail.com, anna-maria@linutronix.de, mark.rutland@arm.com, linus.walleij@linaro.org, Jason@zx2c4.com, deller@gmx.de, rdunlap@infradead.org, davem@davemloft.net, hch@lst.de, peterx@redhat.com, hca@linux.ibm.com, f.fainelli@gmail.com, gerg@kernel.org, dave.hansen@linux.intel.com, mingo@kernel.org, ardb@kernel.org, Liam.Howlett@oracle.com, mhocko@suse.com, 42.hyeyoo@gmail.com, peterz@infradead.org, ardb@google.com, enh@google.com, rientjes@google.com, groeck@chromium.org, mpe@ellerman.id.au, Vlastimil Babka , Andrei Vagin , Dmitry Safonov <0x7f454c46@gmail.com>, Mike Rapoport , Alexander Mikhalitsyn , Benjamin Berg Subject: Re: [PATCH v4 1/1] exec: seal system mappings Message-ID: <20250116052655.GA23894@lst.de> References: <20241125202021.3684919-1-jeffxu@google.com> <20241125202021.3684919-2-jeffxu@google.com> <202412171248.409B10D@keescook> <202501061647.6C8F34CB1A@keescook> <5cf1601b-70c3-45bb-81ef-416d89c415c2@lucifer.local> <202501151538.3E757401@keescook> 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: <202501151538.3E757401@keescook> User-Agent: Mutt/1.5.17 (2007-11-01) On Wed, Jan 15, 2025 at 03:52:23PM -0800, Kees Cook wrote: > > You seem to be saying you're pushing an internal feature on upstream and > > only care about internal use cases, this is not how upstream works, as > > Matthew alludes to. > > Internal? No. Chrome OS and Android. Linux runs more Android devices > than everything else in the world combined -- this is not some random > experiment. All of which are tightly controlled by Google and not actually open to users. Which doesn't say they don't matter, but they matter a lot less than fetures widely useful to the open not locked down userbase of classic Linux.