From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E77BED2505E for ; Mon, 12 Jan 2026 09:45:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 552146B0088; Mon, 12 Jan 2026 04:45:47 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4FFB06B0089; Mon, 12 Jan 2026 04:45:47 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3FE396B008A; Mon, 12 Jan 2026 04:45:47 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 2D4A66B0088 for ; Mon, 12 Jan 2026 04:45:47 -0500 (EST) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id EDA0BC2741 for ; Mon, 12 Jan 2026 09:45:46 +0000 (UTC) X-FDA: 84322829892.20.5506167 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf20.hostedemail.com (Postfix) with ESMTP id 43DD51C0007 for ; Mon, 12 Jan 2026 09:45:45 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=none; spf=pass (imf20.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1768211145; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fdMLvjeapQ/bfLWsnXGxaJQDtJcQspJseu6jDbRyKHU=; b=LsyHxOWMm5e/wOpsURGDv9Iqq4NoNUTxxDIc3MvdgssrOgbh761UdqQ73EqHk7J+RFdMc0 stkqu8viszvl6NQMZI78fCIRnrA62E4HSUk9wP3bbDe+Pz+b4eD+g3QoXz+SNh+l+6K8dX Fb60Wnd671DkCx2v/xdZ69tPkrfWWZw= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=none; spf=pass (imf20.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1768211145; a=rsa-sha256; cv=none; b=T2fvL57jjtLjoxgqUAJaKBBZhUg8s03HoYb6joliradJH+p4l6DTLJI56EbZahL63Admzq XGc6E24MbV6vtwDbaUalVTcSmrfFToXvWGuAVN6Ku5m/XAaqA4iDSiMxhrkU+COWeXhlP0 LoTjnLhnC5MnE6/Ri3tbHJJbwrhynJw= Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5A486339; Mon, 12 Jan 2026 01:45:37 -0800 (PST) Received: from [10.57.48.185] (unknown [10.57.48.185]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D5C6F3F694; Mon, 12 Jan 2026 01:45:36 -0800 (PST) Message-ID: Date: Mon, 12 Jan 2026 10:45:34 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 14/14] mm: Add basic tests for lazy_mmu To: "David Hildenbrand (Red Hat)" , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Alexander Gordeev , Andreas Larsson , Andrew Morton , Anshuman Khandual , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , "Ritesh Harjani (IBM)" , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Venkat Rao Bagalkote , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org References: <20251215150323.2218608-1-kevin.brodsky@arm.com> <20251215150323.2218608-15-kevin.brodsky@arm.com> <1e123306-0efe-457f-953b-d4a27ce6bc60@kernel.org> From: Kevin Brodsky Content-Language: en-GB In-Reply-To: <1e123306-0efe-457f-953b-d4a27ce6bc60@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: c3cm7tqnrat48jj631ehmo6gx4ssope7 X-Rspam-User: X-Rspamd-Queue-Id: 43DD51C0007 X-Rspamd-Server: rspam08 X-HE-Tag: 1768211145-492935 X-HE-Meta: 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 VYRnZQNk alw9guP5rHMJXT5fFL/9GGnetoyTlRmlcgi+4Kqtb87ZMHuXd0bvQlyEVHnxr2tMEviurYhEdEYShobCdKFZbGQnta/OzYjtL0S68KnG7EjSHCRa3Z/i/BQ5cMy2zSMOkCACd0+V5yJYi3wH5nANurHeWAlSooEdbCd9AUKbnJcReqgwS4fMfuPPm064iJiVUI4ILCYou16jpesUXUdGNvJtzswt2++qWA9ZpTou4/iBd030ecxPCx9k9u77wJwbkpgLZGoYCGyP4+Ohm7C9XDKGfqi5p9WM3JV57 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 09/01/2026 16:07, David Hildenbrand (Red Hat) wrote: > > Very nice test 🙂 Thanks! > > I think I prefer the EXPORT_SYMBOL_IF_KUNIT over disabling the test > for PPC and over making lazy_mmu_mode_enable() non-inlined functions > with an exported symbol The EXPORT_SYMBOL_IF_KUNIT approach is what's currently in mm-unstable (with the fixes from Ritesh and me). - Kevin