From mboxrd@z Thu Jan 1 00:00:00 1970 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 A24D9C433F5 for ; Tue, 10 May 2022 07:07:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0CE9D6B0072; Tue, 10 May 2022 03:07:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 07D3A6B0073; Tue, 10 May 2022 03:07:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EAD486B0074; Tue, 10 May 2022 03:07:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id DB24A6B0072 for ; Tue, 10 May 2022 03:07:01 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay12.hostedemail.com (Postfix) with ESMTP id B8D1E120E64 for ; Tue, 10 May 2022 07:07:01 +0000 (UTC) X-FDA: 79448951442.20.C5C34CB Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf24.hostedemail.com (Postfix) with ESMTP id F28A71800C5 for ; Tue, 10 May 2022 07:06:52 +0000 (UTC) Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Ky8GZ3wPgzhYx0; Tue, 10 May 2022 15:06:30 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Tue, 10 May 2022 15:06:57 +0800 Received: from [10.174.177.243] (10.174.177.243) 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 15.1.2375.24; Tue, 10 May 2022 15:06:57 +0800 Message-ID: <1331b212-59d8-5e9d-974c-e0f3a47d9879@huawei.com> Date: Tue, 10 May 2022 15:06:56 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.5.1 Subject: Re: [PATCH v2 0/5] arm64: Cleanup ioremap() and support ioremap_prot() Content-Language: en-US To: , , , , CC: , , References: <20220429103225.75121-1-wangkefeng.wang@huawei.com> From: Kefeng Wang In-Reply-To: <20220429103225.75121-1-wangkefeng.wang@huawei.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Authentication-Results: imf24.hostedemail.com; dkim=none; spf=pass (imf24.hostedemail.com: domain of wangkefeng.wang@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=wangkefeng.wang@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: F28A71800C5 X-Stat-Signature: pg37zwwnyoo7awj9omo4q17kkfw6s8kc X-HE-Tag: 1652166412-220723 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: Hello maintainers，kindly ping. On 2022/4/29 18:32, Kefeng Wang wrote: > 1. Enhance generic ioremap to make it more useful. > 2. Let's arm64 use GENERIC_IOREMAP to cleanup code. > 3. Support HAVE_IOREMAP_PROT on arm64, which enable generic_access_phys(), > it is useful when debug(eg, gdb) via access_process_vm device memory > infrastructure. > > v2: > - s/addr/phys_addr in ioremap_prot, suggested by Andrew Morton > - rename arch_ioremap/iounmap_check to arch_ioremap/iounmad > and change return value, per Christoph Hellwig and Andrew Morton > - and use 'ifndef arch_ioremap' instead of weak function, per Arnd Bergmann > - collect ack/review > > Kefeng Wang (5): > mm: ioremap: Use more sensibly name in ioremap_prot() > mm: ioremap: Setup phys_addr of struct vm_struct > mm: ioremap: Add arch_ioremap/iounmap() > arm64: mm: Convert to GENERIC_IOREMAP > arm64: Add HAVE_IOREMAP_PROT support > > .../features/vm/ioremap_prot/arch-support.txt | 2 +- > arch/arm64/Kconfig | 2 + > arch/arm64/include/asm/io.h | 20 +++-- > arch/arm64/include/asm/pgtable.h | 10 +++ > arch/arm64/kernel/acpi.c | 2 +- > arch/arm64/mm/hugetlbpage.c | 10 --- > arch/arm64/mm/ioremap.c | 85 +++---------------- > include/asm-generic/io.h | 16 +++- > mm/ioremap.c | 27 ++++-- > 9 files changed, 74 insertions(+), 100 deletions(-) >