Re: [kvmtool PATCH 03/10] riscv: Add Zbc extension support

Andrew Jones
2024-03-05T13:35:07Z

On Wed, Feb 14, 2024 at 05:51:34PM +0530, Anup Patel wrote:
> When the Zbc extension is available expose it to the guest
> via device tree so that guest can use it.
>
> Signed-off-by: Anup Patel <apatel@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 8485acf..84b6087 100644
> --- a/riscv/fdt.c
> +++ b/riscv/fdt.c
> @@ -24,6 +24,7 @@ struct isa_ext_info isa_info_arr[] = {
> {"svpbmt", KVM_RISCV_ISA_EXT_SVPBMT},
> {"zba", KVM_RISCV_ISA_EXT_ZBA},
> {"zbb", KVM_RISCV_ISA_EXT_ZBB},
> + {"zbc", KVM_RISCV_ISA_EXT_ZBC},
> {"zbs", KVM_RISCV_ISA_EXT_ZBS},
> {"zicbom", KVM_RISCV_ISA_EXT_ZICBOM},
> {"zicboz", KVM_RISCV_ISA_EXT_ZICBOZ},
> diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
> index d2fc2d4..6d09eee 100644
> --- a/riscv/include/kvm/kvm-config-arch.h
> +++ b/riscv/include/kvm/kvm-config-arch.h
> @@ -49,6 +49,9 @@ struct kvm_config_arch {
> OPT_BOOLEAN('\0', "disable-zbb", \
> &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBB], \
> "Disable Zbb Extension"), \
> + OPT_BOOLEAN('\0', "disable-zbc", \
> + &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBC], \
> + "Disable Zbc Extension"), \
> OPT_BOOLEAN('\0', "disable-zbs", \
> &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZBS], \
> "Disable Zbs Extension"), \
> --
> 2.34.1
>

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>