diff options
| author | Andrew Jones <ajones@ventanamicro.com> | 2023-02-24 19:26:31 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-15 07:26:08 +0300 |
| commit | b20f67994f35d75758ff671cd5095ec0cfab6ff9 (patch) | |
| tree | 83cce5611cc218f9fe96a92b078d1b5cb3fc72a1 /arch/riscv/include/uapi | |
| parent | 665fd8862413f21cd924fc121eadcd32ea122c52 (diff) | |
| download | linux-b20f67994f35d75758ff671cd5095ec0cfab6ff9.tar.xz | |
RISC-V: KVM: Expose Zicboz to the guest
Guests may use the cbo.zero instruction when the CPU has the Zicboz
extension and the hypervisor sets henvcfg.CBZE.
Add Zicboz support for KVM guests which may be enabled and
disabled from KVM userspace using the ISA extension ONE_REG API.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20230224162631.405473-9-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/uapi')
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index c1a1bb0fa91c..e44c1e90eaa7 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -106,6 +106,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_SVINVAL, KVM_RISCV_ISA_EXT_ZIHINTPAUSE, KVM_RISCV_ISA_EXT_ZICBOM, + KVM_RISCV_ISA_EXT_ZICBOZ, KVM_RISCV_ISA_EXT_MAX, }; |