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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>
This commit is contained in:
Isaku Yamahata 2013-09-21 01:23:36 +09:00 committed by Juan Quintela
parent 5016e2df56
commit dc3c26a479
1 changed files with 4 additions and 5 deletions
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9
arch_init.c
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@ -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 &&