diff mbox series

[PULL,16/20] KVM: Simplify dirty log sync in kvm_set_phys_mem

Message ID 20210517112001.2564006-17-pbonzini@redhat.com
State New
Headers show
Series [PULL,01/20] configure: Only clone softfloat-3 repositories if TCG is enabled | expand

Commit Message

Paolo Bonzini May 17, 2021, 11:19 a.m. UTC 
From: Peter Xu <peterx@redhat.com>

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>
---
 accel/kvm/kvm-all.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 7031dd4250..0ba6d48120 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -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 */