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migration: Remove static allocation of xzblre cache buffer 

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>
This commit is contained in:
Vijaya Kumar K 2016-10-24 16:26:49 +01:00 committed by Peter Maydell
parent a3ae21ec3f
commit adb65dec4b
1 changed files with 3 additions and 1 deletions
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4
migration/ram.c
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@ -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)
{
@ -1431,6 +1431,7 @@ 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;
@ -1889,6 +1890,7 @@ 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);