From mboxrd@z Thu Jan 1 00:00:00 1970 From: takahiro.akashi@linaro.org (AKASHI Takahiro) Date: Tue, 6 Mar 2018 19:22:56 +0900 Subject: [PATCH v2 0/7] kexec_file, x86, powerpc: refactoring for other architecutres Message-ID: <20180306102303.9063-1-takahiro.akashi@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 parts were 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 *visible* differences are: * renamings of _kexec_kernel_image_probe() and _kimage_file_post_load_cleanup() * change one of types of arguments at prepare_elf64_headers() Those, unfortunately, require a couple of trivial changes on the rest (#1, #6 to #13) of my arm64 kexec_file patch set[1]. 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 Changes in v2 (Mar 6, 2018) * use IS_ENABLED() instead of #ifdef's in kexec_calculate_store_digests() * rename _kexec_kernel_*() and make them static for now except for kexec_image_probe_default() which is actually used by arch(powerpc) code (Note: kexec_image_post_load_cleanup_default() will also be exported by arm64 patches.) * change a type of kernel_map in prepare_elf64_headers() to "int" * check for a total number of system ram regions in full_up_crash_elf_data() and use vzalloc() instead of vmalloc() 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 | 334 ++++++---------------------- arch/x86/kernel/kexec-bzimage64.c | 2 +- arch/x86/kernel/machine_kexec_64.c | 45 +--- include/linux/kexec.h | 32 ++- kernel/kexec_file.c | 240 +++++++++++++++++++- 11 files changed, 338 insertions(+), 366 deletions(-) -- 2.16.2