aboutsummaryrefslogtreecommitdiff
path: root/vl.c
diff options
context:
space:
mode:
Diffstat (limited to 'vl.c')
-rw-r--r--vl.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/vl.c b/vl.c
index 2d9f04e4c2..ca26450e30 100644
--- a/vl.c
+++ b/vl.c
@@ -3346,6 +3346,12 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
if (flags & RAM_SAVE_FLAG_COMPRESS) {
uint8_t ch = qemu_get_byte(f);
+#if defined(__linux__)
+ if (ch == 0 &&
+ (!kvm_enabled() || kvm_has_sync_mmu())) {
+ madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE, MADV_DONTNEED);
+ } else
+#endif
memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE);
} else if (flags & RAM_SAVE_FLAG_PAGE)
qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE);