Commit d613a56f authored by Isaku Yamahata's avatar Isaku Yamahata Committed by Juan Quintela

migration: ram_handle_compressed

ram_handle_compressed() should be aware of size > TARGET_PAGE_SIZE.
migration-rdma can call it with larger size.
Signed-off-by: default avatarIsaku Yamahata <yamahata@private.email.ne.jp>
Signed-off-by: default avatarJuan Quintela <quintela@redhat.com>
parent dc3c26a4
......@@ -848,13 +848,14 @@ 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_range(host, TARGET_PAGE_SIZE)) {
if (ch != 0 || !is_zero_range(host, size)) {
memset(host, ch, size);
#ifndef _WIN32
if (ch == 0 &&
(!kvm_enabled() || kvm_has_sync_mmu()) &&
getpagesize() <= TARGET_PAGE_SIZE) {
qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
if (ch == 0 && (!kvm_enabled() || kvm_has_sync_mmu())) {
size = size & ~(getpagesize() - 1);
if (size > 0) {
qemu_madvise(host, size, QEMU_MADV_DONTNEED);
}
}
#endif
}
......
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