Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp3601413yba; Tue, 9 Apr 2019 00:23:48 -0700 (PDT) X-Google-Smtp-Source: APXvYqx9Tq2FAtzGqT31OzduJZkBrELN8p5v/WMmvar8g/gAqJFsMaZMGI0GWTVWvPFP3vO/7VRK X-Received: by 2002:a17:902:110c:: with SMTP id d12mr9069260pla.47.1554794628141; Tue, 09 Apr 2019 00:23:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554794628; cv=none; d=google.com; s=arc-20160816; b=fpnAdxCoKQxiPXrvj2pad8f0RP+zx/DeNoMKbdcBnLmpgFpnpDz1C/yj66gAwyPEo1 UbkHAg7XopweNGtPxREdss0/O0BaezqaeWv7762MaI78oVoawzPJSzif3t3YwWEYACr1 MbHWfEJzX9HDGwUXYAMY7Mr/NIs8i6kDan3jVvgXRL6Lxm2XS96h+adQaVrjMCK81MG/ PSEbA87GdgDu99Ydfx4s4M391xqpry4njgal8cT0DWa6tmP/8RW4bO+ZiDyTTm53sXeX MkKCda2cIIcC1mOcFp6gqU9FD+nPOSRdM1aq0VwVrdrr6jX/cm5CIS24khu9p6hqrv06 Gvyg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=ok8I24TtxuWgDq0ME4RBGiLUC2kWpehBcB4g0fC0unk=; b=Ada4h6L36RiHclryHJMFafSzRaUBeM02DBwVkiyqPFzDWKrqA4AWfBGedqrfCaKXqN dioK9mEBRwPDd6m8ug8hHCWjIMQgSPJLJGRuy9QrU/fK5mXuanO77FlcaVB2KrJuaDWP 6yuPewbgnMpZmF/CSD+DHOQ05jHPD8y6HgSOfBazry7eQxGmpZVkQTwEXH51TXwK4Vp1 UVS6pv/zGSxe76fizYjFMSz7QzhFoUrMXfK2Kjb100IgYljUQ5SeQ3rK4h/OF991Kjay yNMj3bMU0P79IcixtR0pytM97529kEDRUyW3nojYE/ddNBD6TaTfOXQhcigOEV7i5EH+ HR6A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n9si27430039pgp.539.2019.04.09.00.23.32; Tue, 09 Apr 2019 00:23:48 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726644AbfDIHVD (ORCPT + 99 others); Tue, 9 Apr 2019 03:21:03 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:43616 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726595AbfDIHVC (ORCPT ); Tue, 9 Apr 2019 03:21:02 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 8C0E77D3C200B2A62F21; Tue, 9 Apr 2019 15:21:00 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.408.0; Tue, 9 Apr 2019 15:20:54 +0800 From: Chen Zhou To: , , , , CC: , , , , , , , Chen Zhou Subject: [PATCH v2 3/3] kdump: update Documentation about crashkernel on arm64 Date: Tue, 9 Apr 2019 15:31:43 +0800 Message-ID: <20190409073143.75808-4-chenzhou10@huawei.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190409073143.75808-1-chenzhou10@huawei.com> References: <20190409073143.75808-1-chenzhou10@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now we support crashkernel=X,[high,low] on arm64, update the Documentation. Signed-off-by: Chen Zhou --- Documentation/admin-guide/kernel-parameters.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 060482d..d5c65e1 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -715,14 +715,14 @@ Documentation/kdump/kdump.txt for an example. crashkernel=size[KMG],high - [KNL, x86_64] range could be above 4G. Allow kernel + [KNL, x86_64, arm64] range could be above 4G. Allow kernel to allocate physical memory region from top, so could be above 4G if system have more than 4G ram installed. Otherwise memory region will be allocated below 4G, if available. It will be ignored if crashkernel=X is specified. crashkernel=size[KMG],low - [KNL, x86_64] range under 4G. When crashkernel=X,high + [KNL, x86_64, arm64] range under 4G. When crashkernel=X,high is passed, kernel could allocate physical memory region above 4G, that cause second kernel crash on system that require some amount of low memory, e.g. swiotlb -- 2.7.4