From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753224AbeCBF4U (ORCPT ); Fri, 2 Mar 2018 00:56:20 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38688 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750750AbeCBF4S (ORCPT ); Fri, 2 Mar 2018 00:56:18 -0500 Date: Fri, 2 Mar 2018 13:56:09 +0800 From: Dave Young To: AKASHI Takahiro Cc: vgoyal@redhat.com, bhe@redhat.com, mpe@ellerman.id.au, bauerman@linux.vnet.ibm.com, prudo@linux.vnet.ibm.com, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 0/7] kexec_file: refactoring for other architecutres Message-ID: <20180302055609.GA15422@dhcp-128-65.nay.redhat.com> References: <20180227044814.24808-1-takahiro.akashi@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180227044814.24808-1-takahiro.akashi@linaro.org> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi AKASHI, On 02/27/18 at 01:48pm, AKASHI Takahiro wrote: > subject: > > This is a preparatory patch set for adding kexec_file support on arm64. > > It was originally included in a arm64 patch set[1], but Philipp is also > working on their kexec_file support on s390[2] and some changes are now > conflicting. > > So these common part was extracted and put into a separate patch set for > better integration. What's more, my original patch#4 was split into a few > small chunks for easier review after Dave's comment. > > As such, the resulting code is basically identical with my original, and > the only difference is that kexec_file_loaders[] is now declared in kexec.h > after Phillipp's comment[3]. Other than that, this patch set doesn't > require any changes on the rest of my original patch set(#1, #6 to #13). > > Patch#1 allows making a use of purgatory optional, particularly useful > for arm64. > Patch#2 commonalizes arch_kexec_kernel_{image_probe, image_load, > verify_sig}() and arch_kimage_file_post_load_cleanup() across architectures. > Patch#3-#7 is also intended to generalize parse_elf64_headers(), along with > exclude_mem_range(), to be made best re-use of. > > [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-February/561182.html > [2] http://lkml.iu.edu//hypermail/linux/kernel/1802.1/02596.html > [3] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-February/562041.html > > AKASHI Takahiro (7): > kexec_file: make an use of purgatory optional > kexec_file,x86,powerpc: factor out kexec_file_ops functions > x86: kexec_file: purge system-ram walking from prepare_elf64_headers() > x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers() > x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer > x86: kexec_file: clean up prepare_elf64_headers() > kexec_file, x86: move re-factored code to generic side > > arch/powerpc/Kconfig | 3 + > arch/powerpc/include/asm/kexec.h | 2 +- > arch/powerpc/kernel/kexec_elf_64.c | 2 +- > arch/powerpc/kernel/machine_kexec_file_64.c | 39 +--- > arch/x86/Kconfig | 3 + > arch/x86/include/asm/kexec-bzimage64.h | 2 +- > arch/x86/kernel/crash.c | 332 +++++----------------------- > arch/x86/kernel/kexec-bzimage64.c | 2 +- > arch/x86/kernel/machine_kexec_64.c | 45 +--- > include/linux/kexec.h | 36 ++- > kernel/kexec_file.c | 236 +++++++++++++++++++- > 11 files changed, 336 insertions(+), 366 deletions(-) > > -- > 2.16.2 > Reviewed them with eyes and provided some comments, but since it changed the elf header code, I would like to do some basic vmcore related test with crash tools. Will response later. Overall the cleanups looks good, thank you a lot for the cleanups! Thanks Dave