KVM: VMX: EPT Feature Detection

[deliverable/linux.git] / arch / x86 / kvm / mmu.h

#ifndef __KVM_X86_MMU_H
#define __KVM_X86_MMU_H

#include <linux/kvm_host.h>

#ifdef CONFIG_X86_64
#define TDP_ROOT_LEVEL PT64_ROOT_LEVEL
#else
#define TDP_ROOT_LEVEL PT32E_ROOT_LEVEL
#endif

static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
{
	if (unlikely(vcpu->kvm->arch.n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
		__kvm_mmu_free_some_pages(vcpu);
}

static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
{
	if (likely(vcpu->arch.mmu.root_hpa != INVALID_PAGE))
		return 0;

	return kvm_mmu_load(vcpu);
}

static inline int is_long_mode(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_X86_64
	return vcpu->arch.shadow_efer & EFER_LME;
#else
	return 0;
#endif
}

static inline int is_pae(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.cr4 & X86_CR4_PAE;
}

static inline int is_pse(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.cr4 & X86_CR4_PSE;
}

static inline int is_paging(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.cr0 & X86_CR0_PG;
}

#endif