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ramblock-notifier: new

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This adds a notify interface of ram block additions and removals.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-12-21 00:31:36 +08:00
parent fb5e19d2e1
commit 0987d735a3
6 changed files with 112 additions and 49 deletions
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3
xen-mapcache.c
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@ -163,6 +163,7 @@ static void xen_remap_bucket(MapCacheEntry *entry,
err = g_malloc0(nb_pfn * sizeof (int));
if (entry->vaddr_base != NULL) {
ram_block_notify_remove(entry->vaddr_base, entry->size);
if (munmap(entry->vaddr_base, entry->size) != 0) {
perror("unmap fails");
exit(-1);
@ -188,6 +189,7 @@ static void xen_remap_bucket(MapCacheEntry *entry,
entry->valid_mapping = (unsigned long *) g_malloc0(sizeof(unsigned long) *
BITS_TO_LONGS(size >> XC_PAGE_SHIFT));
ram_block_notify_add(entry->vaddr_base, entry->size);
bitmap_zero(entry->valid_mapping, nb_pfn);
for (i = 0; i < nb_pfn; i++) {
if (!err[i]) {
@ -397,6 +399,7 @@ static void xen_invalidate_map_cache_entry_unlocked(uint8_t *buffer)
}
pentry->next = entry->next;
ram_block_notify_remove(entry->vaddr_base, entry->size);
if (munmap(entry->vaddr_base, entry->size) != 0) {
perror("unmap fails");
exit(-1);