[PATCH] RISC-V: Enable Zicbom in usermode

[Yunhui Cui]

Like Zicboz, by enabling the corresponding bits of senvcfg,
the instructions cbo.clean, cbo.flush, and cbo.inval can be
executed normally in user mode.

Signed-off-by: Yunhui Cui <cuiyunhui at bytedance.com>
---
 arch/riscv/kernel/cpufeature.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 1992ea64786e..bc850518ab41 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -924,7 +924,7 @@ unsigned long riscv_get_elf_hwcap(void)
 void __init riscv_user_isa_enable(void)
 {
 	if (riscv_has_extension_unlikely(RISCV_ISA_EXT_ZICBOZ))
-		current->thread.envcfg |= ENVCFG_CBZE;
+		current->thread.envcfg |= ENVCFG_CBIE | ENVCFG_CBCFE | ENVCFG_CBZE;
 	else if (any_cpu_has_zicboz)
 		pr_warn("Zicboz disabled as it is unavailable on some harts\n");
 }
-- 
2.39.2