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| author | Ben Gardon <bgardon@google.com> | 2020-10-14 11:26:55 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-23 03:42:13 -0400 |
| commit | a6a0b05da9f37ff56faa6b8351ed6e0b55032460 (patch) | |
| tree | 62898a48873891214f7ef9849fec5bc7fae43f2a /virt/kvm | |
| parent | 1d8dd6b3f12b03f617820a9ebc19cc2fabf59ce9 (diff) | |
| download | lwn-a6a0b05da9f37ff56faa6b8351ed6e0b55032460.tar.gz lwn-a6a0b05da9f37ff56faa6b8351ed6e0b55032460.zip | |
kvm: x86/mmu: Support dirty logging for the TDP MMU
Dirty logging is a key feature of the KVM MMU and must be supported by
the TDP MMU. Add support for both the write protection and PML dirty
logging modes.
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>
Message-Id: <20201014182700.2888246-16-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 2e8539213125..2541a17ff1c4 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -143,8 +143,6 @@ static void hardware_disable_all(void); static void kvm_io_bus_destroy(struct kvm_io_bus *bus); -static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, gfn_t gfn); - __visible bool kvm_rebooting; EXPORT_SYMBOL_GPL(kvm_rebooting); @@ -2645,8 +2643,7 @@ int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len) } EXPORT_SYMBOL_GPL(kvm_clear_guest); -static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, - gfn_t gfn) +void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, gfn_t gfn) { if (memslot && memslot->dirty_bitmap) { unsigned long rel_gfn = gfn - memslot->base_gfn; @@ -2654,6 +2651,7 @@ static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, set_bit_le(rel_gfn, memslot->dirty_bitmap); } } +EXPORT_SYMBOL_GPL(mark_page_dirty_in_slot); void mark_page_dirty(struct kvm *kvm, gfn_t gfn) { |