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From: dyoung@redhat.com (Dave Young)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/7] kexec_file, x86, powerpc: refactoring for other architecutres
Date: Fri, 9 Mar 2018 14:02:54 +0800
Message-ID: <20180309060254.GA9728@dhcp-128-65.nay.redhat.com> (raw)
In-Reply-To: <20180308010502.GA2600@dhcp-128-65.nay.redhat.com>

On 03/08/18 at 09:05am, Dave Young wrote:
> [Cc Andrew]
> 
> On 03/06/18 at 07:22pm, AKASHI Takahiro wrote:
> > 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
> > 
> 
> AKASHI, thanks for another update, looks good to me:
> 
> Acked-by: Dave Young <dyoung@redhat.com>

Hold on the ack, during today's tests kexec kernel can not boot, it
hangs early.  Will see if it is caused by this series and come back
later.

> 
> Thanks
> Dave

Thanks
Dave

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-06 10:22 AKASHI Takahiro
2018-03-06 10:22 ` [PATCH v2 1/7] kexec_file: make an use of purgatory optional AKASHI Takahiro
2018-03-06 10:22 ` [PATCH v2 2/7] kexec_file, x86, powerpc: factor out kexec_file_ops functions AKASHI Takahiro
2018-03-08  1:13   ` Dave Young
2018-03-14  1:00     ` Thiago Jung Bauermann
2018-03-14  2:14       ` Michael Ellerman
2018-03-06 10:22 ` [PATCH v2 3/7] x86: kexec_file: purge system-ram walking from prepare_elf64_headers() AKASHI Takahiro
2018-03-06 10:23 ` [PATCH v2 4/7] x86: kexec_file: remove X86_64 dependency " AKASHI Takahiro
2018-03-06 10:23 ` [PATCH v2 5/7] x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer AKASHI Takahiro
2018-03-06 10:23 ` [PATCH v2 6/7] x86: kexec_file: clean up prepare_elf64_headers() AKASHI Takahiro
2018-03-06 10:23 ` [PATCH v2 7/7] kexec_file, x86: move re-factored code to generic side AKASHI Takahiro
2018-03-08  1:05 ` [PATCH v2 0/7] kexec_file, x86, powerpc: refactoring for other architecutres Dave Young
2018-03-09  6:02   ` Dave Young [this message]
2018-03-09  6:44     ` Dave Young
2018-03-09  7:18       ` AKASHI Takahiro
2018-03-09  7:46         ` Dave Young
2018-03-09  7:55           ` Dave Young
2018-03-09  9:33             ` AKASHI Takahiro
2018-03-12  3:18               ` Dave Young

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