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authorJan Kiszka <jan.kiszka@siemens.com>2013-09-02 18:43:30 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2013-09-05 18:11:43 +0200
commit3bb28b7208b349e7a1b326e3c6ef9efac1d462bf (patch)
tree8235f8e0b7c426f1cda7ae4e98de47709491ce27 /exec.c
parent88266249701032211c1d7449460d063fbc01bf12 (diff)
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memory: Provide separate handling of unassigned io ports accesses
Accesses to unassigned io ports shall return -1 on read and be ignored on write. Ensure these properties via dedicated ops, decoupling us from the memory core's handling of unassigned accesses. Cc: qemu-stable@nongnu.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'exec.c')
-rw-r--r--exec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/exec.c b/exec.c
index e6f04d8..3859b02 100644
--- a/exec.c
+++ b/exec.c
@@ -1805,7 +1805,8 @@ static void memory_map_init(void)
address_space_init(&address_space_memory, system_memory, "memory");
system_io = g_malloc(sizeof(*system_io));
- memory_region_init(system_io, NULL, "io", 65536);
+ memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io",
+ 65536);
address_space_init(&address_space_io, system_io, "I/O");
memory_listener_register(&core_memory_listener, &address_space_memory);