From patchwork Tue Jun 8 08:34:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 12305833 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D5AFC47082 for ; Tue, 8 Jun 2021 08:31:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 42E306124B for ; Tue, 8 Jun 2021 08:31:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 42E306124B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Yvz12IZSXp+glcqFXs7ZTIo7LVa5d+IMCKlrkDmbmxY=; b=CMvN5iRpRuOR5W O6VsCfUtSO3lgvqR5/Favt3u3E8iTcKvM7Dae1N86ZQsw72s4ndXAqQBSmfIbEogPfCmFAT6uy0jR sIZXS5YlXQ8t1Vk/LWgQergv3WyAMvfLw99fFBi/wQW5qYuCumavja42sYZMmJnx3Pgn6M77k4IeH bsZAS8LREMk7J43O+2EVhQR/7QWbIm2UyNchb0ReheikB8abTNeOXtY9gvDeBru4ax+QWUwFjn3dM 2zvOnYfrczliw4VoZJOL0Mtz74wXpSiYTcvpUiozhYFn+5vc3r8zP2wXWWvbin1lOqO0bAayBj7bC Fd9G0/WBjE9LiPJ7yIxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lqX8X-0078rJ-9d; Tue, 08 Jun 2021 08:31:01 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lqX3n-0076jY-Ip; Tue, 08 Jun 2021 08:26:09 +0000 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Fzjqk3LPtzWspY; Tue, 8 Jun 2021 16:21:06 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 8 Jun 2021 16:25:53 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 8 Jun 2021 16:25:52 +0800 From: Kefeng Wang To: Andrew Morton , CC: , Kefeng Wang , , , , , , , , , , , Subject: [PATCH v3 resend 01/15] mm: add setup_initial_init_mm() helper Date: Tue, 8 Jun 2021 16:34:04 +0800 Message-ID: <20210608083418.137226-2-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210608083418.137226-1-wangkefeng.wang@huawei.com> References: <20210608083418.137226-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210608_012607_864773_5B4C09C1 X-CRM114-Status: UNSURE ( 8.90 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add setup_initial_init_mm() helper to setup kernel text, data and brk. Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-m68k@lists.linux-m68k.org Cc: openrisc@lists.librecores.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-sh@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Kefeng Wang --- include/linux/mm.h | 3 +++ mm/init-mm.c | 9 +++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index c274f75efcf9..02aa057540b7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -244,6 +244,9 @@ int __add_to_page_cache_locked(struct page *page, struct address_space *mapping, #define lru_to_page(head) (list_entry((head)->prev, struct page, lru)) +void setup_initial_init_mm(void *start_code, void *end_code, + void *end_data, void *brk); + /* * Linux kernel virtual memory manager primitives. * The idea being to have a "virtual" mm in the same way diff --git a/mm/init-mm.c b/mm/init-mm.c index 153162669f80..b4a6f38fb51d 100644 --- a/mm/init-mm.c +++ b/mm/init-mm.c @@ -40,3 +40,12 @@ struct mm_struct init_mm = { .cpu_bitmap = CPU_BITS_NONE, INIT_MM_CONTEXT(init_mm) }; + +void setup_initial_init_mm(void *start_code, void *end_code, + void *end_data, void *brk) +{ + init_mm.start_code = (unsigned long)start_code; + init_mm.end_code = (unsigned long)end_code; + init_mm.end_data = (unsigned long)end_data; + init_mm.brk = (unsigned long)brk; +}