# git rev-parse -q --verify eaa567ccaf3a2a7b14ffa38af4bd09613aa1830f^{commit} eaa567ccaf3a2a7b14ffa38af4bd09613aa1830f already have revision, skipping fetch # git checkout -q -f -B kisskb eaa567ccaf3a2a7b14ffa38af4bd09613aa1830f # git clean -qxdf # < git log -1 # commit eaa567ccaf3a2a7b14ffa38af4bd09613aa1830f # Author: Hari Bathini # Date: Mon Jul 27 01:10:28 2020 +0530 # # ppc64/kexec_file: fix kexec load failure with lack of memory hole # # The kexec purgatory has to run in real mode. Only the first memory # block maybe accessible in real mode. And, unlike the case with panic # kernel, no memory is set aside for regular kexec load. Another thing # to note is, the memory for crashkernel is reserved at an offset of # 128MB. So, when crashkernel memory is reserved, the memory ranges to # load kexec segments shrink further as the generic code only looks for # memblock free memory ranges and in all likelihood only a tiny bit of # memory from 0 to 128MB would be available to load kexec segments. # # With kdump being used by default in general, kexec file load is likely # to fail almost always. This can be fixed by changing the memory hole # lookup logic for regular kexec to use the same method as kdump. This # would mean that most kexec segments will overlap with crashkernel # memory region. That should still be ok as the pages, whose destination # address isn't available while loading, are placed in an intermediate # location till a flush to the actual destination address happens during # kexec boot sequence. # # Signed-off-by: Hari Bathini # Tested-by: Pingfan Liu # Reviewed-by: Thiago Jung Bauermann # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/159579242226.5790.13933486642004084417.stgit@hbathini # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 eaa567ccaf3a2a7b14ffa38af4bd09613aa1830f # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- randconfig KCONFIG_SEED=0xACF6A148 # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_CPU_BIG_ENDIAN=n # Added to kconfig CONFIG_CPU_LITTLE_ENDIAN=y # Added to kconfig CONFIG_PPC64=y # Added to kconfig CONFIG_PPC_BOOK3E_64=n # Added to kconfig CONFIG_PPC_BOOK3S_64=y # Added to kconfig CONFIG_PPC_DISABLE_WERROR=y # Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y # Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n # Added to kconfig CONFIG_UBSAN=n # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:6288:warning: override: reassigning to symbol STANDALONE .config:6293:warning: override: reassigning to symbol PPC64 .config:6298:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/drivers/cpufreq/powernv-cpufreq.c: In function 'powernv_cpufreq_reboot_notifier': /kisskb/src/drivers/cpufreq/powernv-cpufreq.c:896:1: warning: the frame size of 1184 bytes is larger than 1024 bytes [-Wframe-larger-than=] 896 | } | ^ Inconsistent kallsyms data Try make KALLSYMS_EXTRA_PASS=1 as a workaround make[1]: *** [/kisskb/src/Makefile:1139: vmlinux] Error 1 make: *** [Makefile:185: __sub-make] Error 2 Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 # Build took: 0:05:58.950054