Re: + powerpc-add-purgatory-for-kexec_file_load-implementation-fix.patch added to -mm tree
From: Thiago Jung Bauermann <hidden>
Date: 2016-09-15 17:01:46
Hello Andrew and Stephen, Am Dienstag, 06 September 2016, 12:17:09 schrieb akpm@linux-foundation.org:
The patch titled
Subject: powerpc-add-purgatory-for-kexec_file_load-implementation-fix
has been added to the -mm tree. Its filename is
powerpc-add-purgatory-for-kexec_file_load-implementation-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/powerpc-add-purgatory-for-kexec_
file_load-implementation-fix.patch and later at
http://ozlabs.org/~akpm/mmotm/broken-out/powerpc-add-purgatory-for-kexec_
file_load-implementation-fix.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code
***
The -mm tree is included into linux-next and is updated
there every 3-4 working daysI noticed that both the kexec_file_load implementation for powerpc and the kexec hand-over buffer patches were removed from -mm and linux-next. kexec_file_load is desired even without the kexec hand-over buffer feature because it enables one to only allow loading of signed kernels, and also to measure the loaded kernel and initramfs. There are users interested in both of those features on powerpc and since IMA already supports them via its hooks in kexec_file_load, the only missing piece in the puzzle is the kexec_file_load implementation itself. The latest version of the kexec_file_load series is v8: https://lists.infradead.org/pipermail/kexec/2016-September/017123.html which is also part of the next-kexec-restore branch at git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git I'm not aware of any issue with v8, so could you consider it for -mm and linux-next independently of the kexec buffer hand-over series?
quoted hunk
------------------------------------------------------ From: Thiago Jung Bauermann <redacted> Subject: powerpc-add-purgatory-for-kexec_file_load-implementation-fix The change below to arch/powerpc/purgatory/Makefile fixes the cross build from ppc64 BE to ppc64 LE. I also noticed that building the purgatory during archprepare is not necessary, so I also made the change below to arch/powerpc/Makefile. I'm preparing a v8 of the kexec_file_load implementation for powerpc series with those changes and will send it shortly. Reported-by: Stephen Rothwell <redacted> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/powerpc/Makefile | 3 --- arch/powerpc/purgatory/Makefile | 8 +++++--- 2 files changed, 5 insertions(+), 6 deletions(-) diff -puN arch/powerpc/Makefile~powerpc-add-purgatory-for-kexec_file_load-implement ation-fix arch/powerpc/Makefile --- a/arch/powerpc/Makefile~powerpc-add-purgatory-for-kexec_file_load-impleme ntation-fix +++ a/arch/powerpc/Makefile@@ -378,9 +378,6 @@ archclean: $(Q)$(MAKE) $(clean)=$(boot) archprepare: checkbin -ifeq ($(CONFIG_KEXEC_FILE),y) - $(Q)$(MAKE) $(build)=arch/powerpc/purgatoryarch/powerpc/purgatory/kexec-purgatory.c -endif # Use the file '.tmp_gas_check' for binutils tests, as gas won't output # to stdout and these checks are run even on install targets. diff -puN arch/powerpc/purgatory/Makefile~powerpc-add-purgatory-for-kexec_file_load -implementation-fix arch/powerpc/purgatory/Makefile --- a/arch/powerpc/purgatory/Makefile~powerpc-add-purgatory-for-kexec_file_lo ad-implementation-fix +++ a/arch/powerpc/purgatory/Makefile@@ -23,10 +23,12 @@ KBUILD_AFLAGS := -fno-exceptions -msoft- -D__ASSEMBLY__ ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) -KBUILD_CFLAGS += $(call cc-option,-mabi=elfv2,$(callcc-option,-mcall-aixdesc)) -KBUILD_AFLAGS += $(call cc-option,-mabi=elfv2) +KBUILD_CFLAGS += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) \ + -mlittle-endian +KBUILD_AFLAGS += $(call cc-option,-mabi=elfv2) -mlittle-endian else -KBUILD_CFLAGS += $(call cc-option,-mcall-aixdesc) +KBUILD_CFLAGS += $(call cc-option,-mcall-aixdesc) -mbig-endian +KBUILD_AFLAGS += -mbig-endian endif $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE _ Patches currently in -mm which might be from bauerman@linux.vnet.ibm.com are kexec_file-allow-arch-specific-memory-walking-for-kexec_add_buffer.patch kexec_file-change-kexec_add_buffer-to-take-kexec_buf-as-argument.patch kexec_file-factor-out-kexec_locate_mem_hole-from-kexec_add_buffer.patch powerpc-change-places-using-config_kexec-to-use-config_kexec_core-instead. patch powerpc-factor-out-relocation-code-from-module_64c-to-elf_util_64c.patch powerpc-generalize-elf64_apply_relocate_add.patch powerpc-adapt-elf64_apply_relocate_add-for-kexec_file_load.patch powerpc-add-functions-to-read-elf-files-of-any-endianness.patch powerpc-implement-kexec_file_load.patch powerpc-add-code-to-work-with-device-trees-in-kexec_file_load.patch powerpc-add-support-for-loading-elf-kernels-with-kexec_file_load.patch powerpc-add-purgatory-for-kexec_file_load-implementation.patch powerpc-add-purgatory-for-kexec_file_load-implementation-fix.patch powerpc-enable-config_kexec_file-in-powerpc-server-defconfigs.patch kexec_file-add-buffer-hand-over-support-for-the-next-kernel.patch powerpc-kexec_file-add-buffer-hand-over-support-for-the-next-kernel.patch kexec_file-allow-skipping-checksum-calculation-for-some-segments.patch kexec_file-add-mechanism-to-update-kexec-segments.patch ima-on-soft-reboot-save-the-measurement-list.patch
-- []'s Thiago Jung Bauermann IBM Linux Technology Center