From patchwork Mon Sep 21 16:27:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 309426 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 852A4C43468 for ; Mon, 21 Sep 2020 16:45:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4559A239D0 for ; Mon, 21 Sep 2020 16:45:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600706704; bh=R7mR3aLIf2CGGcWqGZaqKCMfrWa7L3YNwpWo4rPGCRg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DT8RXmUOFVNpVbKBGwIvROhQTFwm5npzXWXuANK0npB8PmTrJTN3g8Up8DOm4LQP+ qQUbfVlRU/7DV0EA6/I2PLChPLeFAjtGJDc5+GseIFSWLlqcVPuUrzxSEvXbh773tk QPhkRTntwNJvmCyU295sYNfTSZYx73ThcSHMAigM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729192AbgIUQoz (ORCPT ); Mon, 21 Sep 2020 12:44:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:50280 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729466AbgIUQop (ORCPT ); Mon, 21 Sep 2020 12:44:45 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 611ED23998; Mon, 21 Sep 2020 16:44:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600706684; bh=R7mR3aLIf2CGGcWqGZaqKCMfrWa7L3YNwpWo4rPGCRg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jRIFqpvgohnZdxqesm1/75AEisWee6FAgkhH2lith647BHc4HDqbeBgnAfbcBTi9/ EsvwTjlcN4m4ZlAJbVgUePCNpAcjUKGdNW7KkABtfqxFfNeeO88TU2/w0gYmq7rqFl uQhaRiXMeyYoTpTQQx94jcyvbXHRLa8VApVH7egs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stafford Horne , Sasha Levin Subject: [PATCH 5.8 025/118] openrisc: Fix cache API compile issue when not inlining Date: Mon, 21 Sep 2020 18:27:17 +0200 Message-Id: <20200921162037.477621501@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200921162036.324813383@linuxfoundation.org> References: <20200921162036.324813383@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stafford Horne [ Upstream commit 3ae90d764093dfcd6ab8ab6875377302892c87d4 ] I found this when compiling a kbuild random config with GCC 11. The config enables CONFIG_DEBUG_SECTION_MISMATCH, which sets CFLAGS -fno-inline-functions-called-once. This causes the call to cache_loop in cache.c to not be inlined causing the below compile error. In file included from arch/openrisc/mm/cache.c:13: arch/openrisc/mm/cache.c: In function 'cache_loop': ./arch/openrisc/include/asm/spr.h:16:27: warning: 'asm' operand 0 probably does not match constraints 16 | #define mtspr(_spr, _val) __asm__ __volatile__ ( \ | ^~~~~~~ arch/openrisc/mm/cache.c:25:3: note: in expansion of macro 'mtspr' 25 | mtspr(reg, line); | ^~~~~ ./arch/openrisc/include/asm/spr.h:16:27: error: impossible constraint in 'asm' 16 | #define mtspr(_spr, _val) __asm__ __volatile__ ( \ | ^~~~~~~ arch/openrisc/mm/cache.c:25:3: note: in expansion of macro 'mtspr' 25 | mtspr(reg, line); | ^~~~~ make[1]: *** [scripts/Makefile.build:283: arch/openrisc/mm/cache.o] Error 1 The asm constraint "K" requires a immediate constant argument to mtspr, however because of no inlining a register argument is passed causing a failure. Fix this by using __always_inline. Link: https://lore.kernel.org/lkml/202008200453.ohnhqkjQ%25lkp@intel.com/ Signed-off-by: Stafford Horne Signed-off-by: Sasha Levin --- arch/openrisc/mm/cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/openrisc/mm/cache.c b/arch/openrisc/mm/cache.c index 08f56af387ac4..534a52ec5e667 100644 --- a/arch/openrisc/mm/cache.c +++ b/arch/openrisc/mm/cache.c @@ -16,7 +16,7 @@ #include #include -static void cache_loop(struct page *page, const unsigned int reg) +static __always_inline void cache_loop(struct page *page, const unsigned int reg) { unsigned long paddr = page_to_pfn(page) << PAGE_SHIFT; unsigned long line = paddr & ~(L1_CACHE_BYTES - 1);