diff options
| author | Andrew Jones <ajones@ventanamicro.com> | 2022-10-02 07:48:59 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2022-10-02 07:48:59 +0300 |
| commit | afd5dde9a186b8fc5742fff707f184760c4af1a9 (patch) | |
| tree | c904eeb853e64c2e09c234412c0a0fe5105fff6a /arch/riscv/include | |
| parent | 1b5cbb8733f924c99bc48a8e4c2a95449f0f514d (diff) | |
| download | linux-afd5dde9a186b8fc5742fff707f184760c4af1a9.tar.xz | |
RISC-V: KVM: Provide UAPI for Zicbom block size
We're about to allow guests to use the Zicbom extension. KVM
userspace needs to know the cache block size in order to
properly advertise it to the guest. Provide a virtual config
register for userspace to get it with the GET_ONE_REG API, but
setting it cannot be supported, so disallow SET_ONE_REG.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include')
| -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 9085b90cf324..3d7771300567 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -48,6 +48,7 @@ struct kvm_sregs { /* CONFIG registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ struct kvm_riscv_config { unsigned long isa; + unsigned long zicbom_block_size; }; /* CORE registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |