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kvm: kvm_log_start/stop are only called with known sections

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Let's properly align the sections first and bail out if we would ever
get called with a memory section we don't know yet.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170911174933.20789-6-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
David Hildenbrand 2017-09-11 19:49:32 +02:00 committed by Paolo Bonzini
parent f357f564be
commit 343562e8fa
1 changed files with 12 additions and 6 deletions
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18
accel/kvm/kvm-all.c
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@ -411,15 +411,21 @@ static int kvm_slot_update_flags(KVMMemoryListener *kml, KVMSlot *mem,
static int kvm_section_update_flags(KVMMemoryListener *kml,
MemoryRegionSection *section)
{
hwaddr phys_addr = section->offset_within_address_space;
ram_addr_t size = int128_get64(section->size);
KVMSlot *mem = kvm_lookup_matching_slot(kml, phys_addr, size);
hwaddr start_addr, size;
KVMSlot *mem;
if (mem == NULL) {
size = kvm_align_section(section, &start_addr);
if (!size) {
return 0;
} else {
return kvm_slot_update_flags(kml, mem, section->mr);
}
mem = kvm_lookup_matching_slot(kml, start_addr, size);
if (!mem) {
fprintf(stderr, "%s: error finding slot\n", __func__);
abort();
}
return kvm_slot_update_flags(kml, mem, section->mr);
}
static void kvm_log_start(MemoryListener *listener,