From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BEE38C433F5 for ; Tue, 28 Sep 2021 15:48:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7BE9960F44 for ; Tue, 28 Sep 2021 15:48:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7BE9960F44 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CfxOVfwziNo1jug2MDwsz080yK/B/kdwH2s9sp45I6Q=; b=eOSYMovfBMw1mO 39bXTLEy2auXefiQ1Fue7xjFWuD/RpAJ50NyFLM+wNH5NF9VgYpZ9ipZ/+nT02kZgRDn6RC8r17ld l/lisZdhZkZekWi6S0M5nu5gCMJd4dHjbF0xycc9/ST8zF+E5/rixaQBufpmlyJ7JldmPm3qLMVaY rq8aSdy6QzGq1itQoMcUgQ3camGfrmUXJLfC7yx0a9Cq0h21YrexnkpA+iNv79Qo1gXM9NRQkKwe7 dWbPpcpJcI425WwpsDstd2AJ7aPKKsFw2AvJsBc6gQQyn/iiC6sovTMiBLT3i/tCvFydbsvqKN3lG to9T1L2a7DvUfmL4M5jg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVFJ0-007pxL-MU; Tue, 28 Sep 2021 15:46:07 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVFFO-007oCB-J4 for linux-arm-kernel@lists.infradead.org; Tue, 28 Sep 2021 15:42:24 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 832A361213; Tue, 28 Sep 2021 15:42:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632843742; bh=CO94xDsc1VtfSRAfyKqtO5ONWPyRd2vlujyNsapS8kQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nnijjKG41jlJwa3o/h94QbMzuYt/xrzfbVW7/HD2VIesnu/lRCqsG/OgYMX80y9IQ hH4/BVEka83RqpyFz6r9slWxrqp0I3VvuGyIfOzKH+fuK+ZZLaGcLE0IV3JpAeha0I ASE1LfkaUDQIdm7PjdJ2tgJ1FN2nzkzQqWPFLmgdf3vqv/sDRyxMT+eEamyKzMpgZl knvAexWpCIo2DM5H84nxqeLWz98tsxUbukm0J9R/56hS96DmM8o6p1axJ1iQR2d3pv 4ZhohkxknS4pwtQEQv2Z/b7ozo2B1IY2gzN3qDsatFd9OH+5HmlrBdMR50JYNVmN7i Kr8V4dFSt98kw== From: Arnd Bergmann To: Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Ard Biesheuvel , Linus Walleij , Nathan Chancellor , Nick Desaulniers , llvm@lists.linux.dev Subject: [PATCH 11/14] ARM: kasan: work around LPAE build warning Date: Tue, 28 Sep 2021 17:41:40 +0200 Message-Id: <20210928154143.2106903-12-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210928154143.2106903-1-arnd@kernel.org> References: <20210928154143.2106903-1-arnd@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210928_084222_730602_6211FC5D X-CRM114-Status: GOOD ( 13.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Arnd Bergmann pgd_page_vaddr() returns an 'unsigned long' address, causing a warning with the memcpy() call in kasan_init(): arch/arm/mm/kasan_init.c: In function 'kasan_init': include/asm-generic/pgtable-nop4d.h:44:50: error: passing argument 2 of '__memcpy' makes pointer from integer without a cast [-Werror=int-conversion] 44 | #define pgd_page_vaddr(pgd) ((unsigned long)(p4d_pgtable((p4d_t){ pgd }))) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | long unsigned int arch/arm/include/asm/string.h:58:45: note: in definition of macro 'memcpy' 58 | #define memcpy(dst, src, len) __memcpy(dst, src, len) | ^~~ arch/arm/mm/kasan_init.c:229:16: note: in expansion of macro 'pgd_page_vaddr' 229 | pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_START)), | ^~~~~~~~~~~~~~ arch/arm/include/asm/string.h:21:47: note: expected 'const void *' but argument is of type 'long unsigned int' 21 | extern void *__memcpy(void *dest, const void *src, __kernel_size_t n); | ~~~~~~~~~~~~^~~ Avoid this by adding an explicit typecast. Fixes: 5615f69bc209 ("ARM: 9016/2: Initialize the mapping of KASan shadow memory") Reviewed-by: Linus Walleij Link: https://lore.kernel.org/all/CACRpkdb3DMvof3-xdtss0Pc6KM36pJA-iy=WhvtNVnsDpeJ24Q@mail.gmail.com/ Signed-off-by: Arnd Bergmann --- arch/arm/mm/kasan_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c index 9c348042a724..4b1619584b23 100644 --- a/arch/arm/mm/kasan_init.c +++ b/arch/arm/mm/kasan_init.c @@ -226,7 +226,7 @@ void __init kasan_init(void) BUILD_BUG_ON(pgd_index(KASAN_SHADOW_START) != pgd_index(KASAN_SHADOW_END)); memcpy(tmp_pmd_table, - pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_START)), + (void*)pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_START)), sizeof(tmp_pmd_table)); set_pgd(&tmp_pgd_table[pgd_index(KASAN_SHADOW_START)], __pgd(__pa(tmp_pmd_table) | PMD_TYPE_TABLE | L_PGD_SWAPPER)); -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel