linux/arch/powerpc/kexec/Makefile

# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux kernel.
#

obj-y				+= core.o crash.o core_$(BITS).o

obj-$(CONFIG_PPC32)		+= relocate_32.o

obj-$(CONFIG_KEXEC_FILE)	+= file_load.o ranges.o file_load_$(BITS).o elf_$(BITS).o

# Disable GCOV, KCOV & sanitizers in odd or sensitive code
GCOV_PROFILE_core_$(BITS).o := n
KCOV_INSTRUMENT_core_$(BITS).o := n
UBSAN_SANITIZE_core_$(BITS).o := n
KASAN_SANITIZE_core.o := n
KASAN_SANITIZE_core_$(BITS) := n
powerpc/kexec: Move kexec files into a dedicated subdir. arch/powerpc/kernel/ contains 8 files dedicated to kexec. Move them into a dedicated subdirectory. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: Move to a/p/kexec, drop the 'machine' naming and use 'core' instead] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/afbef97ec6a978574a5cf91a4441000e0a9da42a.1572351221.git.christophe.leroy@c-s.fr 2019-10-29 15:13:58 +03:00			`# SPDX-License-Identifier: GPL-2.0`
			`#`
			`# Makefile for the linux kernel.`
			`#`

			`obj-y += core.o crash.o core_$(BITS).o`

			`obj-$(CONFIG_PPC32) += relocate_32.o`

powerpc/kexec_file: Add helper functions for getting memory ranges In kexec case, the kernel to be loaded uses the same memory layout as the running kernel. So, passing on the DT of the running kernel would be good enough. But in case of kdump, different memory ranges are needed to manage loading the kdump kernel, booting into it and exporting the elfcore of the crashing kernel. The ranges are exclude memory ranges, usable memory ranges, reserved memory ranges and crash memory ranges. Exclude memory ranges specify the list of memory ranges to avoid while loading kdump segments. Usable memory ranges list the memory ranges that could be used for booting kdump kernel. Reserved memory ranges list the memory regions for the loading kernel's reserve map. Crash memory ranges list the memory ranges to be exported as the crashing kernel's elfcore. Add helper functions for setting up the above mentioned memory ranges. This helpers facilitate in understanding the subsequent changes better and make it easy to setup the different memory ranges listed above, as and when appropriate. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Tested-by: Pingfan Liu <piliu@redhat.com> Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/159602279194.575379.8526552316948643550.stgit@hbathini 2020-07-29 14:40:00 +03:00			`obj-$(CONFIG_KEXEC_FILE) += file_load.o ranges.o file_load_$(BITS).o elf_$(BITS).o`
powerpc/kexec: Move kexec files into a dedicated subdir. arch/powerpc/kernel/ contains 8 files dedicated to kexec. Move them into a dedicated subdirectory. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: Move to a/p/kexec, drop the 'machine' naming and use 'core' instead] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/afbef97ec6a978574a5cf91a4441000e0a9da42a.1572351221.git.christophe.leroy@c-s.fr 2019-10-29 15:13:58 +03:00
			`# Disable GCOV, KCOV & sanitizers in odd or sensitive code`
			`GCOV_PROFILE_core_$(BITS).o := n`
			`KCOV_INSTRUMENT_core_$(BITS).o := n`
			`UBSAN_SANITIZE_core_$(BITS).o := n`
powerpc/kasan: Disable address sanitization in kexec paths The kexec code paths involve code that necessarily run in real mode, as CPUs are disabled and control is transferred to the new kernel. Disable address sanitization for the kexec code and the functions called in real mode on CPUs being disabled. [paulus@ozlabs.org: combined a few work-in-progress commits of Daniel's and wrote the commit message.] Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> [mpe: Move pseries_machine_kexec() into kexec.c so setup.c can be instrumented] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YoTFSQ2TUSEaDdVC@cleo 2022-05-18 13:07:05 +03:00			`KASAN_SANITIZE_core.o := n`
			`KASAN_SANITIZE_core_$(BITS) := n`