diff options
| author | Peter Xu | 2020-10-14 11:26:46 -0700 |
|---|---|---|
| committer | Paolo Bonzini | 2020-10-21 18:17:01 -0400 |
| commit | 9e9eb226b91225fc199bbafc06f3cd70bfce0100 (patch) | |
| tree | 5902dbf1cd1a5dc09d8f69b9b098c8478a302b79 | |
| parent | 2f2fad0897cbfda4e384a7b9eab73654974015ac (diff) | |
KVM: Cache as_id in kvm_memory_slot
Cache the address space ID just like the slot ID. It will be used in
order to fill in the dirty ring entries.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20201014182700.2888246-7-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | include/linux/kvm_host.h | 1 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 05e3c2fb3ef7..c6f45687ba89 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -346,6 +346,7 @@ struct kvm_memory_slot { unsigned long userspace_addr; u32 flags; short id; + u16 as_id; }; static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 68edd25dcb11..2e8539213125 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1247,6 +1247,11 @@ static int kvm_delete_memslot(struct kvm *kvm, memset(&new, 0, sizeof(new)); new.id = old->id; + /* + * This is only for debugging purpose; it should never be referenced + * for a removed memslot. + */ + new.as_id = as_id; r = kvm_set_memslot(kvm, mem, old, &new, as_id, KVM_MR_DELETE); if (r) @@ -1313,6 +1318,7 @@ int __kvm_set_memory_region(struct kvm *kvm, if (!mem->memory_size) return kvm_delete_memslot(kvm, mem, &old, as_id); + new.as_id = as_id; new.id = id; new.base_gfn = mem->guest_phys_addr >> PAGE_SHIFT; new.npages = mem->memory_size >> PAGE_SHIFT; |