diff options
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 03ba402c476..63afca1c295 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -832,6 +832,9 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_NR_MEMSLOTS: r = KVM_MEMORY_SLOTS; break; + case KVM_CAP_PV_MMU: + r = !tdp_enabled; + break; default: r = 0; break; @@ -2452,9 +2455,19 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_emulate_halt); +static inline gpa_t hc_gpa(struct kvm_vcpu *vcpu, unsigned long a0, + unsigned long a1) +{ + if (is_long_mode(vcpu)) + return a0; + else + return a0 | ((gpa_t)a1 << 32); +} + int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) { unsigned long nr, a0, a1, a2, a3, ret; + int r = 1; kvm_x86_ops->cache_regs(vcpu); @@ -2476,6 +2489,9 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) case KVM_HC_VAPIC_POLL_IRQ: ret = 0; break; + case KVM_HC_MMU_OP: + r = kvm_pv_mmu_op(vcpu, a0, hc_gpa(vcpu, a1, a2), &ret); + break; default: ret = -KVM_ENOSYS; break; @@ -2483,7 +2499,7 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) vcpu->arch.regs[VCPU_REGS_RAX] = ret; kvm_x86_ops->decache_regs(vcpu); ++vcpu->stat.hypercalls; - return 0; + return r; } EXPORT_SYMBOL_GPL(kvm_emulate_hypercall); |