From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 23 Feb 2026 12:44:50 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vuUMr-004oqw-1U for lore@lore.pengutronix.de; Mon, 23 Feb 2026 12:44:50 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vuUMr-0001RR-Qh for lore@pengutronix.de; Mon, 23 Feb 2026 12:44:50 +0100 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-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=bWICeED7C52WB0k/pTcjRyPQujRCXZMLw4ei4JVLGr0=; b=CbhVveO3ieT4tPT7sTEumER6RI n1x6ZGQOgWCGteuzNzYtF6/bAn8F11yEWjTj8FR6wUowF/8zutYHbHcAbBxdvcCZqIn3LqhI7a0Yy 3NUF5wRsLTw5crTejYYrCEdjNGQt3qHsODXx2HW8+inYDDszWHRUI4ncWmo5eADjgx40L3bjI2SB8 jJgs5r0p2saTeQuE99NPoB4h2PmBEpSuI/rjjVDgz9Vo8mt+sFidbB+ntQzD3HsvDkaMPPozL91M2 UAaQOhYIzMxMkRuhEspqtn+1EOysV26mIjAgqIzq6NIbwZ2m518o2sAhzAdDHH14uSVev5beRsPWQ FFNX0KVA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vuUMW-00000000DHF-1fmT; Mon, 23 Feb 2026 11:44:28 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vuUMT-00000000DGJ-3IGB for barebox@lists.infradead.org; Mon, 23 Feb 2026 11:44:26 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=[127.0.0.1]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1vuUMS-0001Nw-BN; Mon, 23 Feb 2026 12:44:24 +0100 Message-ID: <74d9ecd8-7c2d-4090-8ff0-7dd16d8b2be1@pengutronix.de> Date: Mon, 23 Feb 2026 12:44:23 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Sascha Hauer , Renaud Barbier Cc: barebox@lists.infradead.org References: <20260203141945.1417902-1-renaud.barbier@ametek.com> From: Ahmad Fatoum Content-Language: en-US, de-DE, de-BE In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260223_034425_824768_E09D90A7 X-CRM114-Status: GOOD ( 19.38 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 0/1] Initial ARMv7-A LPAE support X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Hello Sascha, On 2/23/26 12:40 PM, Sascha Hauer wrote: > Hi Renaud, > > On Tue, Feb 03, 2026 at 02:19:44PM +0000, Renaud Barbier wrote: >> The LPAE support allows to map physical address above the 32-bit space in >> the ARMv7-A processor to a 32-bit virtual address. >> >> This patch set was tested on a LS1021A-IOT. Later, a patch to the PCIe >> designware driver will be provided to prove the remapping of 40-bit PA to >> 32-bit VA. >> >> This patch does not include an update of the mmuinfo command. >> >> Renaud Barbier (1): >> arm: mmu: initial LPAE support >> >> arch/arm/Kconfig | 9 + >> arch/arm/configs/layerscape_v7_defconfig | 1 + >> arch/arm/cpu/Makefile | 4 + >> arch/arm/cpu/mmu_lpae.c | 650 ++++++++++++++++++++ >> arch/arm/cpu/mmu_lpae.h | 101 +++ > > The patch duplicates most of the existing MMU support. Can we do better? I had asked for it in this form, so I can get a look at how much duplication there is and how to go from there. I haven't come around yet to review it though, but I will try to find the time soon. Cheers, Ahmad > > Sascha > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |