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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2019-02-03 21:35:45 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-29 10:47:10 +0200 |
| commit | 805bc0bc238f7209fca5e39c152b0d3c12046ac9 (patch) | |
| tree | 97edfcee4981bc71c2e6a9dc853353010ac4fa94 /arch/s390/Makefile | |
| parent | s390: enable processes for mio instructions (diff) | |
| download | linux-805bc0bc238f7209fca5e39c152b0d3c12046ac9.tar.xz linux-805bc0bc238f7209fca5e39c152b0d3c12046ac9.zip | |
s390/kernel: build a relocatable kernel
This patch adds support for building a relocatable kernel with -fPIE.
The kernel will be relocated to 0 early in the boot process.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Makefile')
| -rw-r--r-- | arch/s390/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 9c079a506325..54b8a12d64e8 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -16,6 +16,10 @@ KBUILD_AFLAGS_MODULE += -fPIC KBUILD_CFLAGS_MODULE += -fPIC KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 +ifeq ($(CONFIG_RELOCATABLE),y) +KBUILD_CFLAGS += -fPIE +LDFLAGS_vmlinux := -pie +endif aflags_dwarf := -Wa,-gdwarf-2 KBUILD_AFLAGS_DECOMPRESSOR := -m64 -D__ASSEMBLY__ KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) |