From cc440cdad5b7a4c1de12dace725209eb3e0cf663 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 13 May 2020 13:36:32 -0400 Subject: KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE Similar to VMX, the state that is captured through the currently available IOCTLs is a mix of L1 and L2 state, dependent on whether the L2 guest was running at the moment when the process was interrupted to save its state. In particular, the SVM-specific state for nested virtualization includes the L1 saved state (including the interrupt flag), the cached L2 controls, and the GIF. Signed-off-by: Paolo Bonzini --- arch/x86/kvm/cpuid.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/x86/kvm/cpuid.h') diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index 63a70f6a3df3..05434cd9342f 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -303,4 +303,9 @@ static __always_inline void kvm_cpu_cap_check_and_set(unsigned int x86_feature) kvm_cpu_cap_set(x86_feature); } +static inline bool page_address_valid(struct kvm_vcpu *vcpu, gpa_t gpa) +{ + return PAGE_ALIGNED(gpa) && !(gpa >> cpuid_maxphyaddr(vcpu)); +} + #endif -- cgit v1.2.3