From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 18 Dec 2025 09:14:19 +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 1vW99P-00ClHm-2m for lore@lore.pengutronix.de; Thu, 18 Dec 2025 09:14:19 +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 1vW99P-0002uV-Bd for lore@pengutronix.de; Thu, 18 Dec 2025 09:14:19 +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: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=AZrWhKEc9pnGdmrjn6F+GX1LYqoJWGXfYP6Fmt4p2qQ=; b=VmlSFZzlVPIV5S/fugsKtcSA6j GufiofUWHPaimP64lyV+QnKUwWxcOBJNm7N4n+Qdnu/3H1K2WYnlTN8tRSpIRpeVyoQZ7r3lA5pOD xEvPZ6Ky+t87lv2vqhftnwqilpnf68MwmffTk6XEsn+3QwFgTvZSMvN6D/m92zgMFIW+o7tGcZzu6 7XK3C33C9pktz3Hd2aVuEnwmPKaNAQvMKhZimqUZrpij634wqSWNeTGxUzAISkZyeaayEL6ym2do+ Cr3kLxnL/Dna7QIDkinXEjaGbCp9Wy6J8TEpXYezxec4lzQUwotFeQskiKSyoEBd8sxnvWH4dqb9O x6EFPwfQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vW993-000000082EO-0tbb; Thu, 18 Dec 2025 08:13:57 +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 1vW990-000000082Da-1wbR for barebox@lists.infradead.org; Thu, 18 Dec 2025 08:13:55 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vW98y-0002p1-TK; Thu, 18 Dec 2025 09:13:52 +0100 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 1vW98y-006FLy-2M; Thu, 18 Dec 2025 09:13:52 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1vW98y-00000007JP5-2okD; Thu, 18 Dec 2025 09:13:52 +0100 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20251216105242.2722918-1-a.fatoum@pengutronix.de> References: <20251216105242.2722918-1-a.fatoum@pengutronix.de> Message-Id: <176604563266.1742864.13948804781110791760.b4-ty@pengutronix.de> Date: Thu, 18 Dec 2025 09:13:52 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251218_001354_516050_7A7A77E6 X-CRM114-Status: UNSURE ( 7.33 ) 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=-4.0 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 v3] ARM64: mmu: implement mmu_disable completely in assembly 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 Tue, 16 Dec 2025 11:52:40 +0100, Ahmad Fatoum wrote: > Splitting mmu_disable into two noinline function on a RK3568 leads to a > barebox crash, because the code has the implicit assumption that the > compiler won't generate memory accesses including spilling to stack. > > We can't guarantee this in C code, so implement the procedure in > assembly. > > [...] Applied, thanks! [1/1] ARM64: mmu: implement mmu_disable completely in assembly https://git.pengutronix.de/cgit/barebox/commit/?id=3d5c7a8e4afb (link may not be stable) Best regards, -- Sascha Hauer