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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2023-02-15 08:33:27 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-02-15 08:33:27 +0300 |
| commit | 9a5c09dd97014e7f3dc3a440d2ee67fdb33dcc6e (patch) | |
| tree | 6650d63c384dac96b4455aa0d9d6cd4cbd24a887 /arch/riscv/Makefile | |
| parent | 3863f2a431f9bc01053f92f8b56852c121bf54e0 (diff) | |
| parent | 75c53905f8738fecf691a78de401250e298900f9 (diff) | |
| download | linux-9a5c09dd97014e7f3dc3a440d2ee67fdb33dcc6e.tar.xz | |
Merge patch series "Remove toolchain dependencies for Zicbom"
Conor Dooley <conor@kernel.org> says:
From: Conor Dooley <conor.dooley@microchip.com>
I've yoinked patch 1 from Drew's series adding support for Zicboz &
attached two more patches here that remove the need for, and then drop
the toolchain support checks for Zicbom. The goal is to remove the need
for checking the presence of toolchain Zicbom support in the work being
done to support non instruction based CMOs [1].
I've tested compliation on a number of different configurations with
the Zicbom config option enabled. The important ones to call out I
guess are:
- clang/llvm 14 w/ LLVM=1 which doesn't support Zicbom atm.
- gcc 11 w/ binutils 2.37 which doesn't support Zicbom atm either.
- clang/llvm 15 w/ LLVM=1 BUT with binutils 2.37's ld. This is the
configuration that prompted adding the LD checks as cc/as supports
Zicbom, but ld doesn't [2].
- gcc 12 w/ binutils 2.39 & clang 15 w/ LLVM=1, both of these supported
Zicbom before and still do.
I also checked building the THEAD errata etc with
CONFIG_RISCV_ISA_ZICBOM disabled, and there were no build issues there
either.
* b4-shazam-merge:
RISC-V: remove toolchain version checks for Zicbom
RISC-V: replace cbom instructions with an insn-def
RISC-V: insn-def: Add I-type insn-def
Link: https://lore.kernel.org/r/20230108163356.3063839-1-conor@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/Makefile')
| -rw-r--r-- | arch/riscv/Makefile | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 12d91b0a73d8..f9ba78ddb5c6 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -58,9 +58,6 @@ riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c toolchain-need-zicsr-zifencei := $(call cc-option-yn, -march=$(riscv-march-y)_zicsr_zifencei) riscv-march-$(toolchain-need-zicsr-zifencei) := $(riscv-march-y)_zicsr_zifencei -# Check if the toolchain supports Zicbom extension -riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZICBOM) := $(riscv-march-y)_zicbom - # Check if the toolchain supports Zihintpause extension riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause |