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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 334A3C9833F for ; Mon, 28 Sep 2026 11:00:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=W/VZm44XzSsz564iDu6yls171Wz+1fQyfbWB7NPC/qE=; b=SxCd3f85rMn48qEcDYBEfQNGUD OmQDG//uBW0wgK6dekU8hbco/H+Pd72/O8/mvetyKd7nOHEF9CHvViBsHfWKuo3bBt0YbtH3rPkZa u6aYbVXNabH60wNTs6AqSxJOIGjgXiE2M6ghM01faWf6TnMh7DA9JLZwvYi5PuX67oKtt9oNKgoiE LRPgQJ9D4BhDnuY/mZocm4GXSS3j5pUon7AlBU/eEfp4r6R+6COGQ4gwwJm0KuKaxI4yz3eTbLIgk +8hTZg9b8kfHqgTZ//tBxQ/Wiy3pGJhp2pgC5ThEKX6u65GKkoSifwSptEVtKkdLhZNBRhQBBXRNE mmTs+YlA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xB95x-00000000PVw-3lC5; Mon, 28 Sep 2026 11:00:29 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xB95x-00000000PVl-0RF0 for linux-um@lists.infradead.org; Mon, 28 Sep 2026 11:00:29 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 39D83600D1; Mon, 28 Sep 2026 11:00:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 852161F000FF; Mon, 28 Sep 2026 11:00:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790593227; bh=W/VZm44XzSsz564iDu6yls171Wz+1fQyfbWB7NPC/qE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=YCMQw9cX13xqhIwBzSMliTFI1BR50NKpER6op4F/axoQCrr9l0XXf6aKT61a2MYnZ 5capFidkNb48gSEu2nhvuhjUmkOoDQEfunJtlKE33rLoPt/132APCimNjZZlyAnfGo BgCXLAb9ZOJGA+56e3kydME3r/Rqy83Tazx1Hgk12gMgLAooFzIbdO92+wgszDwoI7 0wcOm97VS0aIQkcxex3zRx0W1YJhM3LnzW3wvpPufqpPdX1MU9kssrpgnzzKDjtoez tU76c1ClWcl1zqN9EOl4Ujjk7ElqmJTjv6Z92YxS/B01A0Me3ruXGE38icwJuqHZhX mysf0URYpxqRw== Date: Mon, 28 Sep 2026 12:00:19 +0100 From: "Lorenzo Stoakes (ARM)" To: Johannes Berg Cc: Hajime Tazaki , linux-mm@kvack.org, liam@infradead.org, rbm@suse.com, akpm@linux-foundation.org, luto@amacapital.net, brendan.jackman@linux.dev, david@kernel.org, liuhangbin@gmail.com, corbet@lwn.net, kees@kernel.org, broonie@kernel.org, mhocko@suse.com, rppt@kernel.org, shuah@kernel.org, surenb@google.com, vbabka@kernel.org, wad@chromium.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-um@lists.infradead.org, geert@linux-m68k.org, daniel@thingy.jp Subject: Re: [PATCH v3 2/3] selftests: run tests on nommu architecture Message-ID: References: <20260926010819.604346-1-thehajime@gmail.com> <20260926010819.604346-3-thehajime@gmail.com> <04259a99ed91f8a527b255951a6f626310728170.camel@sipsolutions.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <04259a99ed91f8a527b255951a6f626310728170.camel@sipsolutions.net> X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Mon, Sep 28, 2026 at 09:44:49AM +0200, Johannes Berg wrote: > On Sat, 2026-09-26 at 10:08 +0900, Hajime Tazaki wrote: > > Architectures lacks MMU doesn't support fork(2) syscall and only > > nit: Architectures lacking MMU don't support the fork(2) syscall ... > > Not sure where this should be merged? I guess selftests would make most > sense, but you can't actually test it out before the UML nommu changes, > so that doesn't work too well right now? I seem to recall Hajime saying he tested this on an actual nommu device/virtualised equivalent so nommu UML isn't strictly necessary (though very nice to have!) I think I saw something fly by that implied it might be coming in 7.4 is that so? :) > > johannes -- Cheers, Lorenzo