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

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

arch_init.c

+6 −5
Original line number Diff line number Diff line
@@ -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

    }