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| author | Oliver Upton <oliver.upton@linux.dev> | 2023-02-14 00:33:41 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-02-14 00:33:41 +0100 |
| commit | 0d3b2b4d2364166a955d03407ddace9269c603a5 (patch) | |
| tree | 9d6956c1240e43669c3e856292d2a1a996029e30 /arch/arm64/include/uapi | |
| parent | Merge branch kvm-arm64/misc into kvmarm/next (diff) | |
| parent | KVM: arm64: nv: Use reg_to_encoding() to get sysreg ID (diff) | |
| download | linux-0d3b2b4d2364166a955d03407ddace9269c603a5.tar.xz linux-0d3b2b4d2364166a955d03407ddace9269c603a5.zip | |
Merge branch kvm-arm64/nv-prefix into kvmarm/next
* kvm-arm64/nv-prefix:
: Preamble to NV support, courtesy of Marc Zyngier.
:
: This brings in a set of prerequisite patches for supporting nested
: virtualization in KVM/arm64. Of course, there is a long way to go until
: NV is actually enabled in KVM.
:
: - Introduce cpucap / vCPU feature flag to pivot the NV code on
:
: - Add support for EL2 vCPU register state
:
: - Basic nested exception handling
:
: - Hide unsupported features from the ID registers for NV-capable VMs
KVM: arm64: nv: Use reg_to_encoding() to get sysreg ID
KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes
KVM: arm64: nv: Filter out unsupported features from ID regs
KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2
KVM: arm64: nv: Allow a sysreg to be hidden from userspace only
KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor
KVM: arm64: nv: Add accessors for SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2
KVM: arm64: nv: Handle SMCs taken from virtual EL2
KVM: arm64: nv: Handle trapped ERET from virtual EL2
KVM: arm64: nv: Inject HVC exceptions to the virtual EL2
KVM: arm64: nv: Support virtual EL2 exceptions
KVM: arm64: nv: Handle HCR_EL2.NV system register traps
KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state
KVM: arm64: nv: Add EL2 system registers to vcpu context
KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x
KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set
KVM: arm64: nv: Introduce nested virtualization VCPU feature
KVM: arm64: Use the S2 MMU context to iterate over S2 table
arm64: Add ARM64_HAS_NESTED_VIRT cpufeature
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/include/uapi')
| -rw-r--r-- | arch/arm64/include/uapi/asm/kvm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index a7a857f1784d..f8129c624b07 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -109,6 +109,7 @@ struct kvm_regs { #define KVM_ARM_VCPU_SVE 4 /* enable SVE for this CPU */ #define KVM_ARM_VCPU_PTRAUTH_ADDRESS 5 /* VCPU uses address authentication */ #define KVM_ARM_VCPU_PTRAUTH_GENERIC 6 /* VCPU uses generic authentication */ +#define KVM_ARM_VCPU_HAS_EL2 7 /* Support nested virtualization */ struct kvm_vcpu_init { __u32 target; |