riscv: Add zbb extension support
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@ventanamicro.com>
Link: https://lore.kernel.org/r/20230712163501.1769737-7-apatel@ventanamicro.com
Signed-off-by: Will Deacon <will@kernel.org>
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 @@
{"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 @@
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"), \
