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authorIsaku Yamahata <yamahata@private.email.ne.jp>2013-09-21 01:23:36 +0900
committerJuan Quintela <quintela@trasno.org>2013-09-24 13:22:50 +0200
commitdc3c26a479e5bd19c1b3c04f696b8f70ad57f0b7 (patch)
treeed41befb8546ddacb7545df1fad4fc1e5b3513f2 /arch_init.c
parent5016e2df569bc7d67637060103dd360ed2f0d557 (diff)
arch_init: make is_zero_page accept size
Later is_zero_page will be used for non TARGET_PAGE_SIZE range. And rename it to is_zero_range as it isn't page size any more. Signed-off-by: Isaku Yamahata <yamahata@private.email.ne.jp> Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'arch_init.c')
-rw-r--r--arch_init.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/arch_init.c b/arch_init.c
index 18cd9a1f11..c72790f804 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -150,10 +150,9 @@ int qemu_read_default_config_files(bool userconfig)
return 0;
}
-static inline bool is_zero_page(uint8_t *p)
+static inline bool is_zero_range(uint8_t *p, uint64_t size)
{
- return buffer_find_nonzero_offset(p, TARGET_PAGE_SIZE) ==
- TARGET_PAGE_SIZE;
+ return buffer_find_nonzero_offset(p, size) == size;
}
/* struct contains XBZRLE cache and a static page
@@ -497,7 +496,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
acct_info.dup_pages++;
}
}
- } else if (is_zero_page(p)) {
+ } else if (is_zero_range(p, TARGET_PAGE_SIZE)) {
acct_info.dup_pages++;
bytes_sent = save_block_hdr(f, block, offset, cont,
RAM_SAVE_FLAG_COMPRESS);
@@ -849,7 +848,7 @@ static inline void *host_from_stream_offset(QEMUFile *f,
*/
void ram_handle_compressed(void *host, uint8_t ch, uint64_t size)
{
- if (ch != 0 || !is_zero_page(host)) {
+ if (ch != 0 || !is_zero_range(host, TARGET_PAGE_SIZE)) {
memset(host, ch, size);
#ifndef _WIN32
if (ch == 0 &&