KVM: Allocate userspace memory for older userspace

Allocate a userspace buffer for older userspaces.  Also eliminate phys_mem
buffer.  The memset() in kvmctl really kills initial memory usage but swapping
works even with old userspaces.

A side effect is that maximum guest side is reduced for older userspace on
i386.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index e8a21e8cb2ad..eb006ed696c1 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -406,10 +406,8 @@ struct kvm_memory_slot {
         gfn_t base_gfn;
         unsigned long npages;
         unsigned long flags;
-        struct page **phys_mem;
         unsigned long *rmap;
         unsigned long *dirty_bitmap;
-        int user_alloc; /* user allocated memory */
         unsigned long userspace_addr;
 };