[v2][kvmtool PATCH 1/1] riscv: Add zacas extension

[Shaoqing Qin]

Add parsing for Zacas ISA extension which was ratified recently in the
riscv-zacas manual.
The tests are based on the 6.9 version of the kernel

Signed-off-by: Shaoqing Qin <qinshaoqing at bosc.ac.cn>
---
Changed from v1:
1. modify ZACAS enum number.
2. modify the code location,just for formatting.
---
 riscv/fdt.c                         | 1 +
 riscv/include/asm/kvm.h             | 1 +
 riscv/include/kvm/kvm-config-arch.h | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/riscv/fdt.c b/riscv/fdt.c
index cc8070d..6dfc25b 100644
--- a/riscv/fdt.c
+++ b/riscv/fdt.c
@@ -22,6 +22,7 @@ struct isa_ext_info isa_info_arr[] = {
 	{"svinval", KVM_RISCV_ISA_EXT_SVINVAL},
 	{"svnapot", KVM_RISCV_ISA_EXT_SVNAPOT},
 	{"svpbmt", KVM_RISCV_ISA_EXT_SVPBMT},
+	{"zacas", KVM_RISCV_ISA_EXT_ZACAS},
 	{"zba", KVM_RISCV_ISA_EXT_ZBA},
 	{"zbb", KVM_RISCV_ISA_EXT_ZBB},
 	{"zbc", KVM_RISCV_ISA_EXT_ZBC},
diff --git a/riscv/include/asm/kvm.h b/riscv/include/asm/kvm.h
index 7499e88..6b2cbe7 100644
--- a/riscv/include/asm/kvm.h
+++ b/riscv/include/asm/kvm.h
@@ -135,6 +135,7 @@ enum KVM_RISCV_ISA_EXT_ID {
 	KVM_RISCV_ISA_EXT_ZBS,
 	KVM_RISCV_ISA_EXT_ZICNTR,
 	KVM_RISCV_ISA_EXT_ZICSR,
+	KVM_RISCV_ISA_EXT_ZACAS,
 	KVM_RISCV_ISA_EXT_ZIFENCEI,
 	KVM_RISCV_ISA_EXT_ZIHPM,
 	KVM_RISCV_ISA_EXT_SMSTATEEN,
diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
index e562d71..e5343a6 100644
--- a/riscv/include/kvm/kvm-config-arch.h
+++ b/riscv/include/kvm/kvm-config-arch.h
@@ -43,6 +43,9 @@ struct kvm_config_arch {
 	OPT_BOOLEAN('\0', "disable-svpbmt",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_SVPBMT],	\
 		    "Disable Svpbmt Extension"),			\
+	OPT_BOOLEAN('\0', "disable-zacas",				\
+		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZACAS],	\
+		    "Disable Zacas Extension"),			\
 	OPT_BOOLEAN('\0', "disable-zba",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBA],	\
 		    "Disable Zba Extension"),				\
-- 
2.43.0