haraldwolff/qemu-patch-raspberry4
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Don't abort on out of memory when creating page cache

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Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Orit Wasserman 2014-01-30 20:08:37 +02:00 committed by Juan Quintela
parent a5615b14a6
commit a17b2fd358
2 changed files with 30 additions and 6 deletions
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18
arch_init.c
View file

@ -664,8 +664,22 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
DPRINTF("Error creating cache\n");
return -1;
}
XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE);
XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE);
/* We prefer not to abort if there is no memory */
XBZRLE.encoded_buf = g_try_malloc0(TARGET_PAGE_SIZE);
if (!XBZRLE.encoded_buf) {
DPRINTF("Error allocating encoded_buf\n");
return -1;
}
XBZRLE.current_buf = g_try_malloc(TARGET_PAGE_SIZE);
if (!XBZRLE.current_buf) {
DPRINTF("Error allocating current_buf\n");
g_free(XBZRLE.encoded_buf);
XBZRLE.encoded_buf = NULL;
return -1;
}
acct_clear();
}

18
page_cache.c
View file

@ -60,8 +60,12 @@ PageCache *cache_init(int64_t num_pages, unsigned int page_size)
return NULL;
}
cache = g_malloc(sizeof(*cache));
/* We prefer not to abort if there is no memory */
cache = g_try_malloc(sizeof(*cache));
if (!cache) {
DPRINTF("Failed to allocate cache\n");
return NULL;
}
/* round down to the nearest power of 2 */
if (!is_power_of_2(num_pages)) {
num_pages = pow2floor(num_pages);
@ -74,8 +78,14 @@ PageCache *cache_init(int64_t num_pages, unsigned int page_size)
DPRINTF("Setting cache buckets to %" PRId64 "\n", cache->max_num_items);
cache->page_cache = g_malloc((cache->max_num_items) *
sizeof(*cache->page_cache));
/* We prefer not to abort if there is no memory */
cache->page_cache = g_try_malloc((cache->max_num_items) *
sizeof(*cache->page_cache));
if (!cache->page_cache) {
DPRINTF("Failed to allocate cache->page_cache\n");
g_free(cache);
return NULL;
}
for (i = 0; i < cache->max_num_items; i++) {
cache->page_cache[i].it_data = NULL;