From patchwork Thu Oct 23 23:10:58 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geoff Levand X-Patchwork-Id: 5143731 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 76CDFC11AC for ; Thu, 23 Oct 2014 23:43:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 88A5620256 for ; Thu, 23 Oct 2014 23:43:22 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 75B5720253 for ; Thu, 23 Oct 2014 23:43:21 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XhRYk-0004K8-1L; Thu, 23 Oct 2014 23:12:46 +0000 Received: from merlin.infradead.org ([2001:4978:20e::2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XhRXC-0003i2-AB; Thu, 23 Oct 2014 23:11:10 +0000 Received: from geoff by merlin.infradead.org with local (Exim 4.80.1 #2 (Red Hat Linux)) id 1XhRX0-0002mf-OW; Thu, 23 Oct 2014 23:10:58 +0000 Message-Id: In-Reply-To: References: From: Geoff Levand Patch-Date: Thu, 23 Oct 2014 13:58:40 -0700 Subject: [PATCH 06/10] arm64: Update booting.txt to reserved-memory nodes To: Catalin Marinas , Will Deacon Date: Thu, 23 Oct 2014 23:10:58 +0000 Cc: marc.zyngier@arm.com, Grant Likely , kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, christoffer.dall@linaro.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Change any reference of device tree '/memreserve/' entries in the arm64 booting.txt to refer to 'reserved-memory nodes'. Reserved-memory nodes are the preferred method of specifying reserved memory. Signed-off-by: Geoff Levand --- Documentation/arm64/booting.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/arm64/booting.txt b/Documentation/arm64/booting.txt index f3c05b5..7446822 100644 --- a/Documentation/arm64/booting.txt +++ b/Documentation/arm64/booting.txt @@ -196,7 +196,7 @@ following manner: naturally-aligned 64-bit zero-initalised memory location. These CPUs should spin outside of the kernel in a reserved area of - memory (communicated to the kernel by a /memreserve/ region in the + memory (communicated to the kernel by a reserved-memory node in the device tree) polling their cpu-release-addr location, which must be contained in the reserved region. A wfe instruction may be inserted to reduce the overhead of the busy-loop and a sev will be issued by @@ -209,7 +209,7 @@ following manner: - CPUs with a "psci" enable method should remain outside of the kernel (i.e. outside of the regions of memory described to the kernel in the memory node, or in a reserved area of memory described - to the kernel by a /memreserve/ region in the device tree). The + to the kernel by a reserved-memory node in the device tree). The kernel will issue CPU_ON calls as described in ARM document number ARM DEN 0022A ("Power State Coordination Interface System Software on ARM processors") to bring CPUs into the kernel.