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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2025-03-26 15:45:07 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2025-03-26 15:56:37 -0700 |
| commit | bb58e1579f431d42469b6aed0f03eff383ba6db5 (patch) | |
| tree | 99d01ea12a06ec37040f80ddb5104868628e7b79 | |
| parent | 2014c95afecee3e76ca4a56956a936e23283f05b (diff) | |
RISC-V: errata: Use medany for relocatable builds
We're trying to mix non-PIC/PIE objects into the otherwise-PIE
relocatable kernels, to avoid GOT/PLT references during early boot
alternative resolution (which happens before the GOT/PLT are set up).
riscv64-unknown-linux-gnu-ld: arch/riscv/errata/sifive/errata.o: relocation R_RISCV_HI20 against `tlb_flush_all_threshold' can not be used when making a shared object; recompile with -fPIC
riscv64-unknown-linux-gnu-ld: arch/riscv/errata/thead/errata.o: relocation R_RISCV_HI20 against `riscv_cbom_block_size' can not be used when making a shared object; recompile with -fPIC
Fixes: 8dc2a7e8027f ("riscv: Fix relocatable kernels with early alternatives using -fno-pie")
Link: https://lore.kernel.org/r/20250326224506.27165-2-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| -rw-r--r-- | arch/riscv/errata/Makefile | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/riscv/errata/Makefile b/arch/riscv/errata/Makefile index f0da9d7b39c3..bc6c77ba837d 100644 --- a/arch/riscv/errata/Makefile +++ b/arch/riscv/errata/Makefile @@ -1,5 +1,9 @@ ifdef CONFIG_RELOCATABLE -KBUILD_CFLAGS += -fno-pie +# We can't use PIC/PIE when handling early-boot errata parsing, as the kernel +# doesn't have a GOT setup at that point. So instead just use medany: it's +# usually position-independent, so it should be good enough for the errata +# handling. +KBUILD_CFLAGS += -fno-pie -mcmodel=medany endif ifdef CONFIG_RISCV_ALTERNATIVE_EARLY |