diff options
| author | Vincent Chen <vincent.chen@sifive.com> | 2020-06-23 09:13:22 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-06-25 14:58:59 -0700 |
| commit | a0fc3b32893b29a7b3a2771b6d63bae16cb1e8de (patch) | |
| tree | f5455993f728bb55c94a0ce60cd545c55bec35e5 /arch/riscv | |
| parent | 48778464bb7d346b47157d21ffde2af6b2d39110 (diff) | |
| download | linux-a0fc3b32893b29a7b3a2771b6d63bae16cb1e8de.tar.gz linux-a0fc3b32893b29a7b3a2771b6d63bae16cb1e8de.tar.bz2 linux-a0fc3b32893b29a7b3a2771b6d63bae16cb1e8de.zip | |
riscv: Add -fPIC option to CFLAGS_vgettimeofday.o
The time related vDSO functions use a variable, vdso_data, to access the
vDSO data page to get the system time information. Because the vdso_data
for CFLAGS_vgettimeofday.o is an external variable defined in vdso.o,
the CFLAGS_vgettimeofday.o should be compiled with -fPIC to ensure
that vdso_data is addressable.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/kernel/vdso/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile index 38ba55b0eb9d..29cf052f6541 100644 --- a/arch/riscv/kernel/vdso/Makefile +++ b/arch/riscv/kernel/vdso/Makefile @@ -17,7 +17,7 @@ vdso-syms += flush_icache obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o ifneq ($(c-gettimeofday-y),) - CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y) + CFLAGS_vgettimeofday.o += -fPIC -include $(c-gettimeofday-y) endif # Build rules |