kpatch/kmod/patch/Makefile

KPATCH_BUILD ?= /lib/modules/$(shell uname -r)/build
KPATCH_MAKE = $(MAKE) -C $(KPATCH_BUILD) M=$(PWD)
LDFLAGS += $(KPATCH_LDFLAGS)

# ppc64le kernel modules are expected to compile with the
# -mcmodel=large flag.  This enables 64-bit relocations
# instead of a 32-bit offset from the TOC pointer.
PROCESSOR = $(shell uname -m)
ifeq ($(PROCESSOR), ppc64le)
KBUILD_CFLAGS_MODULE += -mcmodel=large
endif

obj-m += $(KPATCH_NAME).o

$(KPATCH_NAME)-objs += patch-hook.o kpatch.lds output.o

all: $(KPATCH_NAME).ko

$(KPATCH_NAME).ko:
	$(KPATCH_MAKE) $(KPATCH_NAME).ko

patch-hook.o: patch-hook.c kpatch-patch-hook.c livepatch-patch-hook.c
	$(KPATCH_MAKE) patch-hook.o

clean:
	$(RM) -Rf .*.o.cmd .*.ko.cmd .tmp_versions *.o *.ko *.mod.c \
	Module.symvers
first pass at a decent user interface This makes it somewhat easy to use. From the root git dir, just: sudo scripts/kpatch-build ~/foo.patch and it'll take care of everything, eventually spitting out the base module (kpatch.ko) and the hotpatch module kpatch-foo.ko. This is still all very crude, but a better user interface is coming soon. 2014-02-13 03:53:05 +00:00			`KPATCH_BUILD ?= /lib/modules/$(shell uname -r)/build`
remove local paths in makefiles Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-01-28 17:23:24 +00:00			`KPATCH_MAKE = $(MAKE) -C $(KPATCH_BUILD) M=$(PWD)`
kpatch-build: build dynrelas or klp relas depending on kernel version Introduce a second phase in the kpatch-build process that creates kpatch modules or livepatch modules that use the new klp rela sections depending on the kernel version being worked on. This change uses the two new programs to either create a patch module that uses dynrelas (create-kpatch-module) or a patch module that uses klp rela and arch sections + klp symbols marked with the correct Elf flags (create-klp-module). For klp patch modules, the --unique flag for ld is needed to prevent .parainstructions and .altinstructions sections from different objects from being merged, as arch_klp_init_object_loaded() applies these sections per-object. 2017-01-23 20:43:43 +00:00			`LDFLAGS += $(KPATCH_LDFLAGS)`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
kpatch-build: clarify ppc64le comments Clarify some of the comment wording in the new ppc64le code. 2017-07-25 16:38:48 +00:00			`# ppc64le kernel modules are expected to compile with the`
			`# -mcmodel=large flag. This enables 64-bit relocations`
			`# instead of a 32-bit offset from the TOC pointer.`
Makefile.inc: replace uname -p with uname -m uname -p returns "unknown" on many systems effectively breaking the build. Replace it with uname -m which yields the correct architecture. 2017-08-18 12:48:43 +00:00			`PROCESSOR = $(shell uname -m)`
kpatch-build: Add PPC64le livepatch support This patch adds support for livepatch hook based module creation for PPC64le. It introduces PPC64le architecture bits: - Add relocation type of R_PPC64_ADDR64 while parsing powerpc ELF. - Introduce .toc sections mainpulation. - Skip kpatch specific details for livepatch hook. Also remove the definition of rela_insn() for powerpc. The only call site is been guarded by #ifdef x86. Cc: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> 2017-07-26 05:46:53 +00:00			`ifeq ($(PROCESSOR), ppc64le)`
			`KBUILD_CFLAGS_MODULE += -mcmodel=large`
			`endif`

kpatch-build: set default module prefix accordingly Use kpatch-<modname>.ko or livepatch-<modname>.ko depending on the type of module we're building. Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> 2017-09-20 20:30:00 +00:00			`obj-m += $(KPATCH_NAME).o`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
kpatch-build: set default module prefix accordingly Use kpatch-<modname>.ko or livepatch-<modname>.ko depending on the type of module we're building. Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> 2017-09-20 20:30:00 +00:00			`$(KPATCH_NAME)-objs += patch-hook.o kpatch.lds output.o`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
kpatch-build: set default module prefix accordingly Use kpatch-<modname>.ko or livepatch-<modname>.ko depending on the type of module we're building. Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> 2017-09-20 20:30:00 +00:00			`all: $(KPATCH_NAME).ko`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
kpatch-build: set default module prefix accordingly Use kpatch-<modname>.ko or livepatch-<modname>.ko depending on the type of module we're building. Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> 2017-09-20 20:30:00 +00:00			`$(KPATCH_NAME).ko:`
			`$(KPATCH_MAKE) $(KPATCH_NAME).ko`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
add *hook.c files and make target dep for patch-hook.o Signed-off-by: Seth Jennings <sjenning@redhat.com> 2015-01-22 17:05:52 +00:00			`patch-hook.o: patch-hook.c kpatch-patch-hook.c livepatch-patch-hook.c`
add livepatch API support Adds a new patch module scaffold for use when building against a kernel with CONFIG_LIVE_PATCHING=y. Signed-off-by: Seth Jennings <sjenning@redhat.com> 2015-01-22 00:28:31 +00:00			`$(KPATCH_MAKE) patch-hook.o`
major rewrite to per-section function/data model Signed-off-by: Seth Jennings <sjenning@redhat.com> 2014-02-11 16:25:48 +00:00
			`clean:`
			`$(RM) -Rf ..o.cmd ..ko.cmd .tmp_versions .o .ko *.mod.c \`
			`Module.symvers`