From patchwork Wed Dec 5 16:41:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steve Capper X-Patchwork-Id: 10714613 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 79600109C for ; Wed, 5 Dec 2018 16:42:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 68E1F2DDDB for ; Wed, 5 Dec 2018 16:42:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 66CC52DE49; Wed, 5 Dec 2018 16:42:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1F7092DDDB for ; Wed, 5 Dec 2018 16:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4D50oOviBB1HW/uUl7CrH+IsbXcbMZTKYSA0t92L05Y=; b=NlLYw5lnL08eTr xUFxN4UJOaH+VbiT7h2lE39Sngsu6NmQrB5uzvwCfh+6UGILnUVkdrcMz+pM78ZACQELVna3mbmhB eiYIIMz8Si02nK0eQ3ODbyokKtQZJg08vvgR1yw2Kjx+sH041aQ2cOc7mso7674xlomIUjZQLkJRV 15+H8TYdpxSTS6By7OrXTEsWzYwh9jzIZ5a61DHouuIP/pwVMCqDVHEpDVeq4DnENjvEFNwEwfTbL 9zwIzfWcXnxUDivxjQcLp1F0vSpBWI86qFN1NGhiQplVZFTPGQ9xE7zVaQ1v0NTU/qo7JGa3Re5RQ jmHCs0Ng+oMM+sCHTplg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gUaGF-00016I-3Q; Wed, 05 Dec 2018 16:42:55 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gUaFU-0000Ko-DB for linux-arm-kernel@lists.infradead.org; Wed, 05 Dec 2018 16:42:11 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A898C1682; Wed, 5 Dec 2018 08:42:04 -0800 (PST) Received: from capper-debian.emea.arm.com (C02R32KKFVH8.manchester.arm.com [10.32.102.139]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 63BC33F5AF; Wed, 5 Dec 2018 08:42:03 -0800 (PST) From: Steve Capper To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH V4 3/6] arm64: mm: Define arch_get_mmap_end, arch_get_mmap_base Date: Wed, 5 Dec 2018 16:41:42 +0000 Message-Id: <20181205164145.24568-4-steve.capper@arm.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181205164145.24568-1-steve.capper@arm.com> References: <20181205164145.24568-1-steve.capper@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181205_084208_486194_0A70C8B1 X-CRM114-Status: UNSURE ( 9.15 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: catalin.marinas@arm.com, Steve Capper , will.deacon@arm.com, jcm@redhat.com, ard.biesheuvel@linaro.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Now that we have DEFAULT_MAP_WINDOW defined, we can arch_get_mmap_end and arch_get_mmap_base helpers to allow for high addresses in mmap. Signed-off-by: Steve Capper Reviewed-by: Catalin Marinas --- arch/arm64/include/asm/processor.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 50586ca6bacb..fe95fd8b065e 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -72,6 +72,13 @@ #define STACK_TOP STACK_TOP_MAX #endif /* CONFIG_COMPAT */ +#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\ + DEFAULT_MAP_WINDOW) + +#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \ + base + TASK_SIZE - DEFAULT_MAP_WINDOW :\ + base) + extern phys_addr_t arm64_dma_phys_limit; #define ARCH_LOW_ADDRESS_LIMIT (arm64_dma_phys_limit - 1)