[PATCH kvmtool 5/8] riscv: Add zbb extension support
Anup Patel
apatel at ventanamicro.com
Wed May 10 01:37:45 PDT 2023
The zbb extension allows software to use basic bitmanip instructions.
Let us add the zbb extension to the Guest device tree whenever it is
supported by the host.
Signed-off-by: Anup Patel <apatel at ventanamicro.com>
---
riscv/fdt.c | 1 +
riscv/include/kvm/kvm-config-arch.h | 3 +++
2 files changed, 4 insertions(+)
diff --git a/riscv/fdt.c b/riscv/fdt.c
index 977e962..17d6757 100644
--- a/riscv/fdt.c
+++ b/riscv/fdt.c
@@ -19,6 +19,7 @@ struct isa_ext_info isa_info_arr[] = {
{"sstc", KVM_RISCV_ISA_EXT_SSTC},
{"svinval", KVM_RISCV_ISA_EXT_SVINVAL},
{"svpbmt", KVM_RISCV_ISA_EXT_SVPBMT},
+ {"zbb", KVM_RISCV_ISA_EXT_ZBB},
{"zicbom", KVM_RISCV_ISA_EXT_ZICBOM},
{"zihintpause", KVM_RISCV_ISA_EXT_ZIHINTPAUSE},
};
diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
index 56676e3..8448b1a 100644
--- a/riscv/include/kvm/kvm-config-arch.h
+++ b/riscv/include/kvm/kvm-config-arch.h
@@ -34,6 +34,9 @@ struct kvm_config_arch {
OPT_BOOLEAN('\0', "disable-svpbmt", \
&(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_SVPBMT], \
"Disable Svpbmt Extension"), \
+ OPT_BOOLEAN('\0', "disable-zbb", \
+ &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBB], \
+ "Disable Zbb Extension"), \
OPT_BOOLEAN('\0', "disable-zicbom", \
&(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZICBOM], \
"Disable Zicbom Extension"), \
--
2.34.1
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