diff options
| author | Ben Gardon <bgardon@google.com> | 2020-10-14 20:26:44 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-21 18:17:00 -0400 |
| commit | 02c00b3a2f7e86203d878ff432a5a19876049db6 (patch) | |
| tree | 27104f708676fc7ad3d2ff5fecfa9dda4b70ded0 /arch/x86/kvm/mmu/tdp_mmu.h | |
| parent | fe5db27d36017715827e9be7711332d701c6b7de (diff) | |
kvm: x86/mmu: Allocate and free TDP MMU roots
The TDP MMU must be able to allocate paging structure root pages and track
the usage of those pages. Implement a similar, but separate system for root
page allocation to that of the x86 shadow paging implementation. When
future patches add synchronization model changes to allow for parallel
page faults, these pages will need to be handled differently from the
x86 shadow paging based MMU's root pages.
Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
machine. This series introduced no new failures.
This series can be viewed in Gerrit at:
https://linux-review.googlesource.com/c/virt/kvm/kvm/+/2538
Signed-off-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/tdp_mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu/tdp_mmu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h index cd4a562a70e9..ac0ef9129442 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.h +++ b/arch/x86/kvm/mmu/tdp_mmu.h @@ -7,4 +7,9 @@ void kvm_mmu_init_tdp_mmu(struct kvm *kvm); void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm); + +bool is_tdp_mmu_root(struct kvm *kvm, hpa_t root); +hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu); +void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root); + #endif /* __KVM_X86_MMU_TDP_MMU_H */ |