Hi AKASHI,
On 03/09/18 at 04:18pm, AKASHI Takahiro wrote:
> Dave,
>
> On Fri, Mar 09, 2018 at 02:44:12PM +0800, Dave Young wrote:
> > On 03/09/18 at 02:02pm, Dave Young wrote:
> > > 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@xxxxxxxxxx>
> > >
> > > 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.
> >
> > AKASHI, it seems the first patch causes the hang, can you take a look?
>
> Sure, but can you first tell me specifics about what you have observed?
It is a kexec load test like below:
kexec -s -l /boot/vmlinuz-`uname -r` --reuse-cmdline
sync
sync
kexec -e
And it hangs after the message "Starting new kernel". Now I'm not sure
how I tested the vmcore parsing before, maybe I forgot to add "-s"
option in kexec-tools..
Thanks
Dave
>
> Thanks,
> -Takahiro AKASHI
>
>
> > >
> > > >
> > > > Thanks
> > > > Dave
> > >
> > > Thanks
> > > Dave
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