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 07A32C5B56A for ; Tue, 11 Aug 2026 14:55:22 +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:Content-Type:MIME-Version: References:In-Reply-To:Subject:Cc:To:From:Message-ID: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=y82Z6id1SOQxi2pM7J/I6X9APP/ghNhSFN4fEVhxHJs=; b=XZvzc6xfBMW74y3JjY3WtKVIaf APmUX457NtU3uY3PaNEITRncs57iyIbcg/kZPWmKDYkYnLfWtWMfplFOyn2+n8ELgKkDP/pG0cEOr EHeLqydoGajVfEw0l26CzQ0CCkbvx+LjHZLN/6NeX5cIevyyanV6BJUPADaFYEcPda1Uot6SZqnCN Iaz3jqqdxLAWsiv/zqCwP+cdeEWC3EzPepu0EOsjZ5TjZ8ucWNBeOqCaY3no4lfl/0k7TT7f8xajg nOkJHkqzyrUa/kCf8xlb8i0LSCWp3nL6zJN6b6yis4QQIvMJj2tUiGv95J4qWOe015V3MlCHUoEO5 7ZA/SRXg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtnsg-0000000EG2r-0FSD; Tue, 11 Aug 2026 14:55:06 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtnse-0000000EG2i-0zNw for linux-arm-kernel@lists.infradead.org; Tue, 11 Aug 2026 14:55:04 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id B0BD143820; Tue, 11 Aug 2026 14:55:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8DFD61F000E9; Tue, 11 Aug 2026 14:55:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786460102; bh=y82Z6id1SOQxi2pM7J/I6X9APP/ghNhSFN4fEVhxHJs=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=k8LODHFVwOUSby+SQHM0QQec2fRyVLFh4x6NfwxnxbU+o5czS0lKpaCkdFc4nTyXh KEh3pWB8crsQMWvevGQ0RtMGtV4AwnFCj4GUKZOyV6N2SziaDXfQeZ+I7mg57pNgbQ sg556L93kYtOE80laBL/qYST6E8vrn+6Cot/gxMlcUTe7rQd/55MP1eeY8R7ZfPqJg llTj/0FTmJFjFdhsF0OEJ6NI8ZRybNMEs2PlLRys2rAwjh5JvD+hgmT8KcbjF5QPxv qeqZol8WD8zy59wFbOZluQdHDLy4H9WJhkVMRFdpFuQQIKwcK2NzXhQGk1OGHTr+HV tQDkiz1ZODR7g== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wtnsa-0000000EYOc-1Dpv; Tue, 11 Aug 2026 14:55:00 +0000 Date: Tue, 11 Aug 2026 15:54:59 +0100 Message-ID: <86ldac1zcs.wl-maz@kernel.org> From: Marc Zyngier To: Will Deacon Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Ard Biesheuvel , Eric Biggers , Daniel Borkmann , Catalin Marinas , Alexei Starovoitov , Oliver Upton , Herbert Xu Subject: Re: [PATCH 00/12] arm64: Remove unused big-endian support In-Reply-To: <20260811140132.22778-1-will@kernel.org> References: <20260811140132.22778-1-will@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, arnd@arndb.de, ardb@kernel.org, ebiggers@kernel.org, daniel@iogearbox.net, catalin.marinas@arm.com, ast@kernel.org, oupton@kernel.org, herbert@gondor.apana.org.au X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 11 Aug 2026 15:01:19 +0100, Will Deacon wrote: > > Hi folks, > > Big-endian support on arm64 (CONFIG_CPU_BIG_ENDIAN) has depended on > BROKEN since 1cf89b6bf660 ("arm64: Kconfig: Make CPU_BIG_ENDIAN depend > on BROKEN") and has already seen some clean-up patches removing some of > the unused support code (e.g. 5276ea17a23c ("lib/crc: arm64: Assume a > little-endian kernel")). > > Finish the job, and remove the remaining big-endian support code from > arm64. Note that the SETEND emulation for 32-bit tasks remains and so > some of the mixed-endian EL0 helpers are retained. > > I've broken this down into fairly coarse chunks, as it seemed a lot > easier to manage than one giant patch (even with the Kconfig being > effectively disabled already) and not all of it is just mindless > deletion. Despite that, I'm anticipating the whole thing going via the > arm64 tree. FWIW: Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.