From patchwork Sun Nov 6 22:01:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catalin Marinas X-Patchwork-Id: 13033641 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2FD5EC4332F for ; Sun, 6 Nov 2022 22:04:32 +0000 (UTC) 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=b+Y10mZmL6n8gVj8xx2bezyEXhWY80k5okPnQXDKTmA=; b=tWshdBAJnTMAfN KtmMb8ZlCzjApe6NFoQixbC4CYCRaefPReLKtZViy42vj7o8bidgRabZC9LFIn1eEgKI59YB1xp9h dzZez8CrIBOabqmT3VP4O2RTTL3zaXcyUv16FEGD1X0gvIAhQWb0g+qlgYsMIbyhQ3j7xKJYEiXLO VPQRdSskl4l3DqzDUmXVg/TTDZRTn/0QLz4/l3b5hlDUO1FRIZExsBWONTA0ywEnrBS/fkn/e0oey ubqXhyki/l0ib+VvHFXGwrxVEB/Y9PFqGNTeZxNR0cWIu7i07EsNj4NLx5lR6FMxzTJr9odAGuqtl YkTLE2LToe/yEkrS+hIg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ornjq-00A9Za-Kw; Sun, 06 Nov 2022 22:03:34 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ornid-00A8xb-AA for linux-arm-kernel@lists.infradead.org; Sun, 06 Nov 2022 22:02:20 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D6DB960DE9; Sun, 6 Nov 2022 22:02:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95051C43147; Sun, 6 Nov 2022 22:02:14 +0000 (UTC) From: Catalin Marinas To: Linus Torvalds , Arnd Bergmann , Christoph Hellwig , Greg Kroah-Hartman Cc: Will Deacon , Marc Zyngier , Andrew Morton , Herbert Xu , Ard Biesheuvel , Isaac Manjarres , Saravana Kannan , Alasdair Kergon , Daniel Vetter , Joerg Roedel , Mark Brown , Mike Snitzer , "Rafael J. Wysocki" , Robin Murphy , linux-mm@kvack.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 07/13] drivers/base: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN Date: Sun, 6 Nov 2022 22:01:37 +0000 Message-Id: <20221106220143.2129263-8-catalin.marinas@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221106220143.2129263-1-catalin.marinas@arm.com> References: <20221106220143.2129263-1-catalin.marinas@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221106_140219_460467_30351997 X-CRM114-Status: GOOD ( 14.08 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects alignment. Signed-off-by: Catalin Marinas Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" --- drivers/base/devres.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 4ab2b50ee38f..5dbfa3c31af6 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -29,10 +29,10 @@ struct devres { * Some archs want to perform DMA into kmalloc caches * and need a guaranteed alignment larger than * the alignment of a 64-bit integer. - * Thus we use ARCH_KMALLOC_MINALIGN here and get exactly the same - * buffer alignment as if it was allocated by plain kmalloc(). + * Thus we use ARCH_DMA_MINALIGN for data[] which will force the same + * alignment for struct devres when allocated by kmalloc(). */ - u8 __aligned(ARCH_KMALLOC_MINALIGN) data[]; + u8 __aligned(ARCH_DMA_MINALIGN) data[]; }; struct devres_group {