From patchwork Thu Apr 14 10:13:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: mawupeng X-Patchwork-Id: 12813250 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91455C433FE for ; Thu, 14 Apr 2022 09:54:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8323A6B0075; Thu, 14 Apr 2022 05:54:37 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7E40A6B0078; Thu, 14 Apr 2022 05:54:37 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 598546B007B; Thu, 14 Apr 2022 05:54:37 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.28]) by kanga.kvack.org (Postfix) with ESMTP id 4CA596B0075 for ; Thu, 14 Apr 2022 05:54:37 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 2B1F260EAB for ; Thu, 14 Apr 2022 09:54:37 +0000 (UTC) X-FDA: 79355024994.15.6CB7774 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf04.hostedemail.com (Postfix) with ESMTP id 3B81D40005 for ; Thu, 14 Apr 2022 09:54:36 +0000 (UTC) Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KfFCm21FzzfYmf; Thu, 14 Apr 2022 17:53:56 +0800 (CST) Received: from dggpemm500014.china.huawei.com (7.185.36.153) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 14 Apr 2022 17:54:33 +0800 Received: from localhost.localdomain (10.175.112.125) by dggpemm500014.china.huawei.com (7.185.36.153) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 14 Apr 2022 17:54:32 +0800 From: Wupeng Ma To: , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v2 4/9] arm64/mirror: arm64 enabling - find mirrored memory ranges Date: Thu, 14 Apr 2022 18:13:09 +0800 Message-ID: <20220414101314.1250667-5-mawupeng1@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 In-Reply-To: <20220414101314.1250667-1-mawupeng1@huawei.com> References: <20220414101314.1250667-1-mawupeng1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500014.china.huawei.com (7.185.36.153) X-CFilter-Loop: Reflected X-Rspam-User: Authentication-Results: imf04.hostedemail.com; dkim=none; spf=pass (imf04.hostedemail.com: domain of mawupeng1@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=mawupeng1@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 3B81D40005 X-Stat-Signature: 3iab8eioqizcfndusu33a5keaofyicbb X-HE-Tag: 1649930076-63505 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: From: Ma Wupeng Commit b05b9f5f9dcf ("x86, mirror: x86 enabling - find mirrored memory ranges") introduced mirrored memory support for x86 and this could be used on arm64. So efi_find_mirror() is added in efi_init() so on EFI enabled systems scan the memory map and tell memblock about any mirrored ranges. Signed-off-by: Ma Wupeng --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/arm64/kernel/setup.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index ea47c0ba7593..1d87dc4e3cef 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2270,7 +2270,7 @@ keepinitrd [HW,ARM] - kernelcore= [KNL,X86,IA-64,PPC] + kernelcore= [KNL,X86,IA-64,PPC,ARM64] Format: nn[KMGTPE] | nn% | "mirror" This parameter specifies the amount of memory usable by the kernel for non-movable allocations. The requested diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index daade64889ff..3957290d9ade 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -345,6 +345,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p) arm64_memblock_init(); efi_fake_memmap(); + efi_find_mirror(); paging_init();