Call MADV_HUGEPAGE for guest RAM allocations
This makes it possible for QEMU to use transparent huge pages (THP)
when transparent_hugepage/enabled=madvise. Otherwise THP is only
used when it's enabled system wide.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/exec.c b/exec.c
index c4ed6fd..750008c 100644
--- a/exec.c
+++ b/exec.c
@@ -2571,6 +2571,7 @@
cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff);
qemu_ram_setup_dump(new_block->host, size);
+ qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE);
if (kvm_enabled())
kvm_setup_guest_memory(new_block->host, size);