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| author | Ben Gardon <bgardon@google.com> | 2020-10-14 21:26:45 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-22 01:17:01 +0300 |
| commit | 2f2fad0897cbfda4e384a7b9eab73654974015ac (patch) | |
| tree | 2a240ade0144f4efd8ad877b02f6e08aec260aa1 /arch/x86/kvm/mmu/mmu_internal.h | |
| parent | 02c00b3a2f7e86203d878ff432a5a19876049db6 (diff) | |
| download | linux-2f2fad0897cbfda4e384a7b9eab73654974015ac.tar.xz | |
kvm: x86/mmu: Add functions to handle changed TDP SPTEs
The existing bookkeeping done by KVM when a PTE is changed is spread
around several functions. This makes it difficult to remember all the
stats, bitmaps, and other subsystems that need to be updated whenever a
PTE is modified. When a non-leaf PTE is marked non-present or becomes a
leaf PTE, page table memory must also be freed. To simplify the MMU and
facilitate the use of atomic operations on SPTEs in future patches, create
functions to handle some of the bookkeeping required as a result of
a change.
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/mmu_internal.h')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu_internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index 6665b10288ce..564954c6b079 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -92,6 +92,8 @@ void kvm_mmu_gfn_disallow_lpage(struct kvm_memory_slot *slot, gfn_t gfn); void kvm_mmu_gfn_allow_lpage(struct kvm_memory_slot *slot, gfn_t gfn); bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, struct kvm_memory_slot *slot, u64 gfn); +void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, + u64 start_gfn, u64 pages); static inline void kvm_mmu_get_root(struct kvm *kvm, struct kvm_mmu_page *sp) { |