From 7ba127ff0905ef6f6abb5cab378ec28cd03a49ef Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Sun, 3 Jul 2011 02:52:09 +0300 Subject: [PATCH] kvm tools: Advise memory allocated for guest RAM as KSM mergable Signed-off-by: Sasha Levin Signed-off-by: Pekka Enberg --- tools/kvm/kvm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/kvm/kvm.c b/tools/kvm/kvm.c index 23d31a31aae7..2f5d633d384f 100644 --- a/tools/kvm/kvm.c +++ b/tools/kvm/kvm.c @@ -346,6 +346,8 @@ struct kvm *kvm__init(const char *kvm_dev, u64 ram_size, const char *name) if (kvm->ram_start == MAP_FAILED) die("out of memory"); + madvise(kvm->ram_start, kvm->ram_size, MADV_MERGEABLE); + ret = ioctl(kvm->vm_fd, KVM_CREATE_IRQCHIP); if (ret < 0) die_perror("KVM_CREATE_IRQCHIP ioctl"); -- 2.39.5