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Subject[PATCH] riscv: kbuild: drop CONFIG_RISCV_ISA_C

The baseline ISA support requirement for the RISC-V Linux kernel
mandates compressed instructions, so it doesn't make sense for
compressed instruction support to be configurable.

Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Atish Patra <atish.patra@wdc.com>

---
arch/riscv/Kconfig | 10 ----------
arch/riscv/Makefile | 2 +-
2 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 59a4727ecd6c..8c5b9329ec46 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -197,16 +197,6 @@ config TUNE_GENERIC

endchoice

-config RISCV_ISA_C
- bool "Emit compressed instructions when building Linux"
- default y
- help
- Adds "C" to the ISA subsets that the toolchain is allowed to emit
- when building Linux, which results in compressed instructions in the
- Linux binary.
-
- If you don't know what to do here, say Y.
-
menu "supported PMU type"
depends on PERF_EVENTS

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 7a117be8297c..e23e066c55e2 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -38,7 +38,7 @@ endif
riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
-riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
+riscv-march-y := $(riscv-march-y)c
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
KBUILD_AFLAGS += -march=$(riscv-march-y)

--
2.22.0
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