From nobody Mon Dec 29 20:32:55 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51FABC5AD4C for ; Thu, 23 Nov 2023 15:26:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346083AbjKWP0u (ORCPT ); Thu, 23 Nov 2023 10:26:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346059AbjKWP0r (ORCPT ); Thu, 23 Nov 2023 10:26:47 -0500 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A2C3D5A; Thu, 23 Nov 2023 07:26:52 -0800 (PST) Received: by mail.gandi.net (Postfix) with ESMTPSA id B949424000C; Thu, 23 Nov 2023 15:26:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1700753211; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F1EYqlVYF1fJ33cC2a0Mertg3uhTJJ/NIkImZDHepJg=; b=Qa0TaAX35przqfse0Y7pj19YS8keDDV1tZXDJA74SmXNXAAw+P/mEhobnbrAHkicEhQX7P IylTzzUBtrXI3qMH6FqGegR7P9u8iB3YhnGTyAc2wFcm4yeLqw9a8oPJsTm5D0k6PF7m7N m9WgwgEDDPnPNVkMAqZjnVagYxNfKsqjTrNNZ2e71Nf0hWcGA7ZfX/vd+THXdVEPovQFnq f8WyYJKBKThZBAic8j3xqrrbKtNaOQ1qtSVQ1RNJryMKGvdYOOoluMOa6Vts7VRgH7mPiQ mpJkztcNxwRKn7NnWd+p+2035Q0Xw8Im/92jbjxFVg95QZI8hJDCFac6SKHh3Q== From: Gregory CLEMENT To: Paul Burton , Thomas Bogendoerfer , linux-mips@vger.kernel.org, Jiaxun Yang , Rob Herring , Krzysztof Kozlowski , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Vladimir Kondratiev , Tawfik Bayouk , Alexandre Belloni , =?UTF-8?q?Th=C3=A9o=20Lebrun?= , Thomas Petazzoni , Gregory CLEMENT , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Florian Fainelli Subject: [PATCH v2 01/21] MIPS: compressed: Use correct instruction for 64 bit code Date: Thu, 23 Nov 2023 16:26:18 +0100 Message-ID: <20231123152639.561231-2-gregory.clement@bootlin.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231123152639.561231-1-gregory.clement@bootlin.com> References: <20231123152639.561231-1-gregory.clement@bootlin.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-GND-Sasl: gregory.clement@bootlin.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The code clearing BSS already use macro or use correct instruction depending if the CPU is 32 bits or 64 bits. However, a few instructions remained 32 bits only. By using the accurate MACRO, it is now possible to deal with memory address beyond 32 bits. As a side effect, when using 64bits processor, it also divides the loop number needed to clear the BSS by 2. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Florian Fainelli Signed-off-by: Gregory CLEMENT --- arch/mips/boot/compressed/head.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/h= ead.S index 5795d0af1e1b2..d237a834b85ee 100644 --- a/arch/mips/boot/compressed/head.S +++ b/arch/mips/boot/compressed/head.S @@ -25,8 +25,8 @@ /* Clear BSS */ PTR_LA a0, _edata PTR_LA a2, _end -1: sw zero, 0(a0) - addiu a0, a0, 4 +1: PTR_S zero, 0(a0) + PTR_ADDIU a0, a0, PTRSIZE bne a2, a0, 1b =20 PTR_LA a0, (.heap) /* heap address */ --=20 2.42.0