diff mbox

[v3,1/7] migration: Remove static allocation of xzblre cache buffer

Message ID 1476205699-28857-2-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell Oct. 11, 2016, 5:08 p.m. UTC 
From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>

Allocate xzblre zero page cache buffer dynamically.
Remove dependency on TARGET_PAGE_SIZE to make run-time
page size detection for arm platforms.

Signed-off-by: Vijaya Kumar K <vijayak@cavium.com>
Message-id: 1465808915-4887-2-git-send-email-vijayak@caviumnetworks.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 migration/ram.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/migration/ram.c b/migration/ram.c
index c8ec9f2..b5bde00 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -69,7 +69,7 @@  static uint64_t bitmap_sync_count;
 /* 0x80 is reserved in migration.h start with 0x100 next */
 #define RAM_SAVE_FLAG_COMPRESS_PAGE    0x100
 
-static const uint8_t ZERO_TARGET_PAGE[TARGET_PAGE_SIZE];
+static uint8_t *ZERO_TARGET_PAGE;
 
 static inline bool is_zero_range(uint8_t *p, uint64_t size)
 {
@@ -1429,6 +1429,7 @@  static void ram_migration_cleanup(void *opaque)
         cache_fini(XBZRLE.cache);
         g_free(XBZRLE.encoded_buf);
         g_free(XBZRLE.current_buf);
+        g_free(ZERO_TARGET_PAGE);
         XBZRLE.cache = NULL;
         XBZRLE.encoded_buf = NULL;
         XBZRLE.current_buf = NULL;
@@ -1887,6 +1888,7 @@  static int ram_save_setup(QEMUFile *f, void *opaque)
 
     if (migrate_use_xbzrle()) {
         XBZRLE_cache_lock();
+        ZERO_TARGET_PAGE = g_malloc0(TARGET_PAGE_SIZE);
         XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
                                   TARGET_PAGE_SIZE,
                                   TARGET_PAGE_SIZE);