diff options
| author | Yu Zhang <yu.c.zhang@linux.intel.com> | 2017-08-24 20:27:55 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-08-24 18:09:17 +0200 |
| commit | 855feb6736403f398dd43764254c5f0522bfc130 (patch) | |
| tree | dbb18f911167e5ae21423314b6122df1a9e7fb5e /arch/x86/kvm/cpuid.c | |
| parent | 2a7266a8f9074f03c014dca641721d451881a42b (diff) | |
KVM: MMU: Add 5 level EPT & Shadow page table support.
Extends the shadow paging code, so that 5 level shadow page
table can be constructed if VM is running in 5 level paging
mode.
Also extends the ept code, so that 5 level ept table can be
constructed if maxphysaddr of VM exceeds 48 bits. Unlike the
shadow logic, KVM should still use 4 level ept table for a VM
whose physical address width is less than 48 bits, even when
the VM is running in 5 level paging mode.
Signed-off-by: Yu Zhang <yu.c.zhang@linux.intel.com>
[Unconditionally reset the MMU context in kvm_cpuid_update.
Changing MAXPHYADDR invalidates the reserved bit bitmasks.
- Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 14505473fb21..f8f18f41976c 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -136,6 +136,7 @@ int kvm_update_cpuid(struct kvm_vcpu *vcpu) /* Update physical-address width */ vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu); + kvm_mmu_reset_context(vcpu); kvm_pmu_refresh(vcpu); return 0; |