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kvm: accept non-mapped memory in kvm_dirty_pages_log_change

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It is okay if memory is not mapped into the guest but has dirty logging
enabled.  When this happens, KVM will not do anything and only accesses
from the host will be logged.

This can be triggered by iofuzz.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-04-27 14:51:31 +02:00
parent 677e7805cf
commit ea8cb1a8d9
1 changed files with 3 additions and 5 deletions
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8
kvm-all.c
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@ -335,12 +335,10 @@ static int kvm_dirty_pages_log_change(hwaddr phys_addr,
KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size);
if (mem == NULL) {
fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-"
TARGET_FMT_plx "\n", __func__, phys_addr,
(hwaddr)(phys_addr + size - 1));
return -EINVAL;
return 0;
} else {
return kvm_slot_dirty_pages_log_change(mem, log_dirty);
}
return kvm_slot_dirty_pages_log_change(mem, log_dirty);
}
static void kvm_log_start(MemoryListener *listener,