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[209.132.180.67]) by mx.google.com with ESMTP id v4-v6si7834097pfm.151.2018.06.28.19.52.49; Thu, 28 Jun 2018 19:53:16 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=J1AMGKM7; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967861AbeF1S0p (ORCPT + 99 others); Thu, 28 Jun 2018 14:26:45 -0400 Received: from mail-io0-f195.google.com ([209.85.223.195]:45871 "EHLO mail-io0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966553AbeF1S0l (ORCPT ); Thu, 28 Jun 2018 14:26:41 -0400 Received: by mail-io0-f195.google.com with SMTP id l25-v6so6121692ioh.12 for ; Thu, 28 Jun 2018 11:26:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=VsLJ6wrLOa63ri0/5rzsT9yRxAaEoRgvfy8CXVui3iI=; b=J1AMGKM7+4CUJ6Yl0FH1lD2y+iHzHzK9YmY2eXX3FOaxVsMZGTcQeJ5r6r9y5ZMjOV yXkrAMer47WguRF8+wFmtTXomPwX6Q21fc6OxICHerAPZ4dCcS/WFfS/fq5NLwgDlqKD 0hbc4AE8+QllsxJNOl20OpDJdDYYCJCGjK8YTJUVqR9YrnDVVtU70YeGzDDRSIYj5Gdo pceNWHxtxc6f/Lpo+vCRKkxVREM29jb9Vp0FArBcVd50xhlBS5eAyK35D/labpDK3dxn aFU6OcOJlR1C0C5i5dnnjHsELngw3b3jcBpXKx3+/DkP/q7+CSniH9L006uhLLt460Ex i6aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=VsLJ6wrLOa63ri0/5rzsT9yRxAaEoRgvfy8CXVui3iI=; b=NiIv8RZ7VxaZ+Wu1sKmpteR8A7uZZu7PHc6kn1S1fgO7+S49DmYFDtWbtFUi5ZcAfM yKLlVIrMksUb53NvJ7+9iLXtExFt4oOJE7AJmi7BMVyeuV3dembmmwil7NV866rsjc/g 19/Q10mWkkmizpw3EFrV1d+OkfLWXI1+4pAeC89b1wa98bwXgyujdQYkB3Bdrqc0SDi+ u4Ll7Gjqjnw8bQix45oU/o793pTuXTBfXdZfqs7bSHICZRVlG4pgNhKCxjgI8s7KzGR5 dJSpWIJhZOpygrYFXn5jQzF163yQKz8Xmh79Yz37rxMur1/ovwOGfOBiTneYBUc3Snrn OCnw== X-Gm-Message-State: APt69E1vIpFUmLrN569WIVdmQvlp6u1nRisLdRKt4v2kKUWvP2554AtM ptBR5sOfKRcwnlJ/X8RZqokrYcDsErsbTfKXzG0Szw== X-Received: by 2002:a6b:5002:: with SMTP id e2-v6mr9944633iob.31.1530210400677; Thu, 28 Jun 2018 11:26:40 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a02:9082:0:0:0:0:0 with HTTP; Thu, 28 Jun 2018 11:26:39 -0700 (PDT) In-Reply-To: <20180627181138.14c9b66e13b8778506205f89@linux-foundation.org> References: <20180627160800.3dc7f9ee41c0badbf7342520@linux-foundation.org> <20180627181138.14c9b66e13b8778506205f89@linux-foundation.org> From: Andrey Konovalov Date: Thu, 28 Jun 2018 20:26:39 +0200 Message-ID: Subject: Re: [PATCH v4 00/17] khwasan: kernel hardware assisted address sanitizer To: Andrew Morton Cc: Vishwath Mohan , Kostya Serebryany , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Catalin Marinas , Will Deacon , Christoph Lameter , Mark Rutland , Nick Desaulniers , Marc Zyngier , Dave Martin , Ard Biesheuvel , "Eric W . Biederman" , Ingo Molnar , Paul Lawrence , Geert Uytterhoeven , Arnd Bergmann , "Kirill A. Shutemov" , Greg Kroah-Hartman , Kate Stewart , Mike Rapoport , kasan-dev , linux-doc@vger.kernel.org, LKML , Linux ARM , linux-sparse@vger.kernel.org, Linux Memory Management List , Linux Kbuild mailing list , Evgenii Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Jann Horn , Mark Brand , Chintan Pandya Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 28, 2018 at 3:11 AM, Andrew Morton wrote: > On Wed, 27 Jun 2018 17:59:00 -0700 Vishwath Mohan wrote: >> Yeah, I can confirm that it's an issue. Like Kostya mentioned, I don't have >> data on-hand, but anecdotally both ASAN and KASAN have proven problematic >> to enable for environments that don't tolerate the increased memory >> pressure well. This includes, >> (a) Low-memory form factors - Wear, TV, Things, lower-tier phones like Go >> (c) Connected components like Pixel's visual core >> >> >> >> These are both places I'd love to have a low(er) memory footprint option at >> my disposal. > > Thanks. > > It really is important that such information be captured in the > changelogs. In as much detail as can be mustered. I'll add it to the changelog in v5. Thanks!