diff options
| author | Anup Patel <Anup.Patel@wdc.com> | 2019-03-26 08:03:47 +0000 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2019-03-26 18:25:06 -0700 |
| commit | 387181dcdb6c1ee254efab4744846a7a53d4c4cb (patch) | |
| tree | 30e2aa91c25ce3dc05ee9b4f790a65e46941c050 /arch/riscv/mm/Makefile | |
| parent | dbee9c9c45846f003ec2f819710c2f4835630a6a (diff) | |
| download | linux-387181dcdb6c1ee254efab4744846a7a53d4c4cb.tar.gz linux-387181dcdb6c1ee254efab4744846a7a53d4c4cb.tar.bz2 linux-387181dcdb6c1ee254efab4744846a7a53d4c4cb.zip | |
RISC-V: Always compile mm/init.c with cmodel=medany and notrace
The Linux RISC-V 32bit kernel is broken after we moved setup_vm() from
kernel/setup.c to mm/init.c because Linux RISC-V 32bit kernel by default
uses cmodel=medlow which results in a non-position-independent setup_vm().
This patch fixes Linux RISC-V 32bit kernel booting by:
1. Forcing cmodel=medany for mm/init.c
2. Moving remaing MM-related stuff va_pa_offset, pfn_base and
empty_zero_page from kernel/setup.c to mm/init.c
Further, the setup_vm() cannot handle GCC instrumentation for FTRACE so
we disable it for mm/init.c by not using "-pg" compiler flag.
Fixes: 6f1e9e946f0b ("RISC-V: Move setup_vm() to mm/init.c")
Suggested-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/mm/Makefile')
| -rw-r--r-- | arch/riscv/mm/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/riscv/mm/Makefile b/arch/riscv/mm/Makefile index eb22ab49b3e0..b68aac701803 100644 --- a/arch/riscv/mm/Makefile +++ b/arch/riscv/mm/Makefile @@ -1,3 +1,9 @@ + +CFLAGS_init.o := -mcmodel=medany +ifdef CONFIG_FTRACE +CFLAGS_REMOVE_init.o = -pg +endif + obj-y += init.o obj-y += fault.o obj-y += extable.o |