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KVM: Simplify dirty log sync in kvm_set_phys_mem

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kvm_physical_sync_dirty_bitmap() on the whole section is inaccurate, because
the section can be a superset of the memslot that we're working on.  The result
is that if the section covers multiple kvm memslots, we could be doing the
synchronization for multiple times for each kvmslot in the section.

With the two helpers that we just introduced, it's very easy to do it right now
by calling the helpers.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210506160549.130416-7-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu
2021-05-06 12:05:45 -04:00
committed by Paolo Bonzini
parent 2c20b27eed
commit 29b7e8be76
1 changed files with 2 additions and 1 deletions
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3
accel/kvm/kvm-all.c
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@@ -1161,7 +1161,8 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml,
goto out;
}
if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
kvm_physical_sync_dirty_bitmap(kml, section);
kvm_slot_get_dirty_log(kvm_state, mem);
kvm_slot_sync_dirty_pages(mem);
}
/* unregister the slot */