diff options
| author | Kai Huang <kai.huang@intel.com> | 2024-11-15 22:52:40 +1300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-03-14 14:20:49 -0400 |
| commit | 62b1fa69f31969e11d03529d3a80599ddda2d043 (patch) | |
| tree | f9ecc36c2dffc9113ad4666db76d2200d799420b /include | |
| parent | aed4dde24c8e10e579ad40d04333a13140d011fc (diff) | |
KVM: Export hardware virtualization enabling/disabling functions
To support TDX, KVM will need to enable TDX during KVM module loading
time. Enabling TDX requires enabling hardware virtualization first so
that all online CPUs (and the new CPU going online) are in post-VMXON
state.
KVM by default enables hardware virtualization but that is done in
kvm_init(), which must be the last step after all initialization is done
thus is too late for enabling TDX.
Export functions to enable/disable hardware virtualization so that TDX
code can use them to handle hardware virtualization enabling before
kvm_init().
Signed-off-by: Kai Huang <kai.huang@intel.com>
Message-ID: <dfe17314c0d9978b7bc3b0833dff6f167fbd28f5.1731664295.git.kai.huang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f34f4cfaa513..1e75fa114f34 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2571,4 +2571,12 @@ long kvm_arch_vcpu_pre_fault_memory(struct kvm_vcpu *vcpu, struct kvm_pre_fault_memory *range); #endif +#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING +int kvm_enable_virtualization(void); +void kvm_disable_virtualization(void); +#else +static inline int kvm_enable_virtualization(void) { return 0; } +static inline void kvm_disable_virtualization(void) { } +#endif + #endif |