diff --git a/riscv/fdt.c b/riscv/fdt.c
index 005301e..cc8070d 100644
--- a/riscv/fdt.c
+++ b/riscv/fdt.c
@@ -29,6 +29,7 @@
 	{"zbkc", KVM_RISCV_ISA_EXT_ZBKC},
 	{"zbkx", KVM_RISCV_ISA_EXT_ZBKX},
 	{"zbs", KVM_RISCV_ISA_EXT_ZBS},
+	{"zfa", KVM_RISCV_ISA_EXT_ZFA},
 	{"zfh", KVM_RISCV_ISA_EXT_ZFH},
 	{"zfhmin", KVM_RISCV_ISA_EXT_ZFHMIN},
 	{"zicbom", KVM_RISCV_ISA_EXT_ZICBOM},
diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
index 10ca3b8..6415d3d 100644
--- a/riscv/include/kvm/kvm-config-arch.h
+++ b/riscv/include/kvm/kvm-config-arch.h
@@ -64,6 +64,9 @@
 	OPT_BOOLEAN('\0', "disable-zbs",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBS],	\
 		    "Disable Zbs Extension"),				\
+	OPT_BOOLEAN('\0', "disable-zfa",				\
+		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZFA],	\
+		    "Disable Zfa Extension"),				\
 	OPT_BOOLEAN('\0', "disable-zfh",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZFH],	\
 		    "Disable Zfh Extension"),				\