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| author | Anup Patel <apatel@ventanamicro.com> | 2023-07-11 19:41:16 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-08-08 14:55:31 +0300 |
| commit | 613029442a4b837d3f8ce8ab08064f095ecdbdb6 (patch) | |
| tree | 43b441ef0dbed55952fe2ce74a76158ac0669450 /arch/riscv/include/uapi | |
| parent | e98b1085be795354073debd371e2889bea4902b9 (diff) | |
| download | linux-613029442a4b837d3f8ce8ab08064f095ecdbdb6.tar.xz | |
RISC-V: KVM: Extend ONE_REG to enable/disable multiple ISA extensions
Currently, the ISA extension ONE_REG interface only allows enabling or
disabling one extension at a time. To improve this, we extend the ISA
extension ONE_REG interface (similar to SBI extension ONE_REG interface)
so that KVM user space can enable/disable multiple extensions in one
ioctl.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include/uapi')
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 930fdc4101cd..6c2285f86545 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -193,6 +193,15 @@ enum KVM_RISCV_SBI_EXT_ID { /* ISA Extension registers are mapped as type 7 */ #define KVM_REG_RISCV_ISA_EXT (0x07 << KVM_REG_RISCV_TYPE_SHIFT) +#define KVM_REG_RISCV_ISA_SINGLE (0x0 << KVM_REG_RISCV_SUBTYPE_SHIFT) +#define KVM_REG_RISCV_ISA_MULTI_EN (0x1 << KVM_REG_RISCV_SUBTYPE_SHIFT) +#define KVM_REG_RISCV_ISA_MULTI_DIS (0x2 << KVM_REG_RISCV_SUBTYPE_SHIFT) +#define KVM_REG_RISCV_ISA_MULTI_REG(__ext_id) \ + ((__ext_id) / __BITS_PER_LONG) +#define KVM_REG_RISCV_ISA_MULTI_MASK(__ext_id) \ + (1UL << ((__ext_id) % __BITS_PER_LONG)) +#define KVM_REG_RISCV_ISA_MULTI_REG_LAST \ + KVM_REG_RISCV_ISA_MULTI_REG(KVM_RISCV_ISA_EXT_MAX - 1) /* SBI extension registers are mapped as type 8 */ #define KVM_REG_RISCV_SBI_EXT (0x08 << KVM_REG_RISCV_TYPE_SHIFT) |