From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 22 Jun 2026 08:21:30 +0200 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 1wbY2D-008YkS-22 for lore@lore.pengutronix.de; Mon, 22 Jun 2026 08:21:30 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1wbY2D-0006XO-0u for lore@pengutronix.de; Mon, 22 Jun 2026 08:21:29 +0200 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:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=XlE2CBXxH3MQXlFn5bwAclTeDfwRyxTPxQOiLpOFIiw=; b=EMriNjCJmgYif30zp9cSnAADqr 5daK08Om6kM+PfGGNkJGeCodY6t+F50Qy+S9mrA8nzxaB+i24tihEInmgcmXeEYpegiWSpQAXxRXG n6ktkxendTdL0zfiot+nqdTdVxvr1i2HTh2ILDRN1T61piWQYE3SwcoJCdfDv2ummRSmZSobRJ0A+ Qf5RUATxoQmLBZ2VGyjBndU5obUindKfDUSXKmJPZYdi07v+FHi/F16xX8OdKFLRBvot1B5c0dzuo K/QdXKbbHhBvIoHn+HWhIqh4jDK1YagG9Ls1WVzQv/4zcK1EyxiSmAgBA1HdZgk/UiCwf3z28woSC WbHi0BHg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbY0s-00000004TKF-2Pce; Mon, 22 Jun 2026 06:20:06 +0000 Received: from mx1.white.stw.pengutronix.de ([185.203.200.13]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbY0o-00000004TJO-28dX for barebox@lists.infradead.org; Mon, 22 Jun 2026 06:20:04 +0000 Received: from drehscheibe.grey.stw.pengutronix.de (drehscheibe.grey.stw.pengutronix.de [IPv6:2a0a:edc0:0:c01:1d::a2]) (Authenticated sender: relay-from-drehscheibe.grey.stw.pengutronix.de) by mx1.white.stw.pengutronix.de (Postfix) with ESMTPSA id 88336200669; Mon, 22 Jun 2026 08:19:56 +0200 (CEST) Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wbY0i-0042aB-1S; Mon, 22 Jun 2026 08:19:56 +0200 Received: from [::1] (helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1wbY0i-00000008pgF-1cU4; Mon, 22 Jun 2026 08:19:56 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20260620050459.1444430-1-a.fatoum@barebox.org> References: <20260620050459.1444430-1-a.fatoum@barebox.org> Message-Id: <178210919637.2105264.570095720490216958.b4-ty@pengutronix.de> Date: Mon, 22 Jun 2026 08:19:56 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260621_232002_712313_6772277B X-CRM114-Status: UNSURE ( 5.36 ) X-CRM114-Notice: Please train this message. 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=-5.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2] ARM: mmu: skip cacheable page flushes for empty ranges 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) On Sat, 20 Jun 2026 07:04:56 +0200, Ahmad Fatoum wrote: > If we end here with a size of zero, region_end will become -1 and > is a sure way to lead into confusing issues. > > __arch_remap_range() skips 0-sized regions, so do likewise here, so > all of arch_remap_range() is 0-size-region safe. > > > [...] Applied, thanks! [1/1] ARM: mmu: skip cacheable page flushes for empty ranges https://git.pengutronix.de/cgit/barebox/commit/?id=95ff4d5058ac (link may not be stable) Best regards, -- Sascha Hauer