git: 31b259049e2b - main - riscv: Enable the zifencei extension explicitly in -march

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=31b259049e2b932ae6527d1dc850c2bec58e94e0

commit 31b259049e2b932ae6527d1dc850c2bec58e94e0
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2026-01-31 17:10:56 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2026-01-31 17:10:56 +0000

    riscv: Enable the zifencei extension explicitly in -march
    
    clang is more tolerant and implies this extension whereas GCC is
    stricter and requires it to be included.
    
    Reviewed by:    mhorne
    Differential Revision:  https://reviews.freebsd.org/D54965
---
 sys/conf/kern.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index e86ffb684f9a..af7b1589c5cd 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -166,7 +166,7 @@ INLINE_LIMIT?=	8000
 # code model as "medium" and "medany" respectively.
 #
 .if ${MACHINE_CPUARCH} == "riscv"
-CFLAGS+=	-march=rv64imafdch
+CFLAGS+=	-march=rv64imafdch_zifencei
 CFLAGS+=	-mabi=lp64
 CFLAGS.clang+=	-mcmodel=medium
 CFLAGS.gcc+=	-mcmodel=medany