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[45.249.212.190]) by mx.google.com with ESMTPS id k18si24300878oib.274.2019.04.16.00.33.35 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 00:33:35 -0700 (PDT) Received-SPF: pass (google.com: domain of chenzhou10@huawei.com designates 45.249.212.190 as permitted sender) client-ip=45.249.212.190; Authentication-Results: mx.google.com; spf=pass (google.com: domain of chenzhou10@huawei.com designates 45.249.212.190 as permitted sender) smtp.mailfrom=chenzhou10@huawei.com Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id B19C6A9FD6C45F289170; Tue, 16 Apr 2019 15:33:28 +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, 16 Apr 2019 15:33:21 +0800 From: Chen Zhou To: , , , , , , , , CC: , , , , , , , Chen Zhou Subject: [PATCH v5 4/4] kdump: update Documentation about crashkernel on arm64 Date: Tue, 16 Apr 2019 15:43:29 +0800 Message-ID: <20190416074329.44928-5-chenzhou10@huawei.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190416074329.44928-1-chenzhou10@huawei.com> References: <20190416074329.44928-1-chenzhou10@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP 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 308af3b..a055983 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