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author | Avi Kivity <avi@redhat.com> | 2012-02-08 21:36:02 +0200 |
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committer | Avi Kivity <avi@redhat.com> | 2012-02-29 13:44:42 +0200 |
commit | 50c1e1491e1981ecba14a477897681d8d0602500 (patch) | |
tree | b978d61c3b39d9ed2f811df18f13fad93097d372 /xen-all.c | |
parent | 4855d41a61301a04e54c074f1139040e4cb4dd00 (diff) | |
download | hqemu-50c1e1491e1981ecba14a477897681d8d0602500.zip hqemu-50c1e1491e1981ecba14a477897681d8d0602500.tar.gz |
memory: support stateless memory listeners
Current memory listeners are incremental; that is, they are expected to
maintain their own state, and receive callbacks for changes to that state.
This patch adds support for stateless listeners; these work by receiving
a ->begin() callback (which tells them that new state is coming), a
sequence of ->region_add() and ->region_nop() callbacks, and then a
->commit() callback which signifies the end of the new state. They should
ignore ->region_del() callbacks.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'xen-all.c')
-rw-r--r-- | xen-all.c | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -394,6 +394,14 @@ static void xen_set_memory(struct MemoryListener *listener, } } +static void xen_begin(MemoryListener *listener) +{ +} + +static void xen_commit(MemoryListener *listener) +{ +} + static void xen_region_add(MemoryListener *listener, MemoryRegionSection *section) { @@ -406,6 +414,11 @@ static void xen_region_del(MemoryListener *listener, xen_set_memory(listener, section, false); } +static void xen_region_nop(MemoryListener *listener, + MemoryRegionSection *section) +{ +} + static void xen_sync_dirty_bitmap(XenIOState *state, target_phys_addr_t start_addr, ram_addr_t size) @@ -500,8 +513,11 @@ static void xen_eventfd_del(MemoryListener *listener, } static MemoryListener xen_memory_listener = { + .begin = xen_begin, + .commit = xen_commit, .region_add = xen_region_add, .region_del = xen_region_del, + .region_nop = xen_region_nop, .log_start = xen_log_start, .log_stop = xen_log_stop, .log_sync = xen_log_sync, |