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memory: Return -1 again on reads from unsigned regions 

This restore the behavior prior to b018ddf633 which accidentally changed
the return code to 0. Specifically guests probing for register existence
were affected by this.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jan Kiszka 2013-07-16 14:45:16 +02:00 committed by Paolo Bonzini
parent b4afea11aa
commit 9b8c692435
1 changed files with 1 additions and 1 deletions
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2
memory.c
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@ -840,7 +840,7 @@ static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
if (current_cpu != NULL) {
cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
}
return 0;
return -1ULL;
}
static void unassigned_mem_write(void *opaque, hwaddr addr,