mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-21 10:01:00 +00:00
fb72d1674d
This patch contains the changes to the KVM MMU necessary for support of the Nested Paging feature in AMD Barcelona and Phenom Processors. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
50 lines
957 B
C
50 lines
957 B
C
#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
|