diff options
| author | Andrew Jones <ajones@ventanamicro.com> | 2023-02-24 19:26:30 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-15 07:26:07 +0300 |
| commit | 665fd8862413f21cd924fc121eadcd32ea122c52 (patch) | |
| tree | 8a92b32d96f95261cf5b9d871d0d7df4cbd8745b /arch/riscv/include/uapi | |
| parent | ab0f77465e3e4ec2d2583cd770b157b16cc22844 (diff) | |
| download | linux-665fd8862413f21cd924fc121eadcd32ea122c52.tar.xz | |
RISC-V: KVM: Provide UAPI for Zicboz block size
We're about to allow guests to use the Zicboz 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: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20230224162631.405473-8-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 92af6f3f057c..c1a1bb0fa91c 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -52,6 +52,7 @@ struct kvm_riscv_config { unsigned long mvendorid; unsigned long marchid; unsigned long mimpid; + unsigned long zicboz_block_size; }; /* CORE registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |