mirror of
https://github.com/dynup/kpatch
synced 2025-01-03 11:12:01 +00:00
b2f40b03ce
While adding proper linker script option my previous patch left the
linker script in the list of source files (on pre-4.20 kernels) for
ld somehow breaking kpatch callback sections. For this to work
properly kpatch.lds needs to be added to 'extra-y' instead of objs. And
for kbuild to process this option properly we need to call make without
the .ko target, i.e. let kbuild decide what to build.
Fixes: 17a97b4 ("kmod/patch: fix patch linking with 4.20")
Signed-off-by: Artem Savkov <asavkov@redhat.com>
30 lines
778 B
Makefile
30 lines
778 B
Makefile
KPATCH_BUILD ?= /lib/modules/$(shell uname -r)/build
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KPATCH_MAKE = $(MAKE) -C $(KPATCH_BUILD) M=$(PWD)
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LDFLAGS += $(KPATCH_LDFLAGS)
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# ppc64le kernel modules are expected to compile with the
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# -mcmodel=large flag. This enables 64-bit relocations
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# instead of a 32-bit offset from the TOC pointer.
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PROCESSOR = $(shell uname -m)
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ifeq ($(PROCESSOR), ppc64le)
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KBUILD_CFLAGS_MODULE += -mcmodel=large
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endif
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obj-m += $(KPATCH_NAME).o
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ldflags-y += -T $(src)/kpatch.lds
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extra-y := kpatch.lds
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$(KPATCH_NAME)-objs += patch-hook.o output.o
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all: $(KPATCH_NAME).ko
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$(KPATCH_NAME).ko:
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$(KPATCH_MAKE)
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patch-hook.o: patch-hook.c kpatch-patch-hook.c livepatch-patch-hook.c
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$(KPATCH_MAKE) patch-hook.o
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clean:
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$(RM) -Rf .*.o.cmd .*.ko.cmd .tmp_versions *.o *.ko *.mod.c \
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Module.symvers
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