new file mode 100644
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+/*
+ * User process backed memory.
+ * This is mainly for KVM post copy.
+ *
+ * Copyright (c) 2011,
+ * National Institute of Advanced Industrial Science and Technology
+ *
+ * https://sites.google.com/site/grivonhome/quick-kvm-migration
+ * Author: Isaku Yamahata <yamahata at valinux co jp>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __LINUX_UMEM_H
+#define __LINUX_UMEM_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#ifdef __KERNEL__
+#include <linux/compiler.h>
+#else
+#define __user
+#endif
+
+#define UMEM_ID_MAX 256
+#define UMEM_NAME_MAX 256
+
+struct umem_name {
+ char id[UMEM_ID_MAX]; /* non-zero terminated */
+ char name[UMEM_NAME_MAX]; /* non-zero terminated */
+};
+
+struct umem_list {
+ __u32 nr;
+ __u32 padding;
+ struct umem_name names[0];
+};
+
+struct umem_create {
+ __u64 size; /* in bytes */
+ __s32 umem_fd;
+ __s32 shmem_fd;
+ __u32 async_req_max;
+ __u32 sync_req_max;
+ struct umem_name name;
+};
+
+struct umem_page_request {
+ __u64 __user *pgoffs;
+ __u32 nr;
+ __u32 padding;
+};
+
+struct umem_page_cached {
+ __u64 __user *pgoffs;
+ __u32 nr;
+ __u32 padding;
+};
+
+#define UMEMIO 0x1E
+
+/* ioctl for umem_dev fd */
+#define UMEM_DEV_CREATE_UMEM _IOWR(UMEMIO, 0x0, struct umem_create)
+#define UMEM_DEV_LIST _IOWR(UMEMIO, 0x1, struct umem_list)
+#define UMEM_DEV_REATTACH _IOWR(UMEMIO, 0x2, struct umem_create)
+
+/* ioctl for umem fd */
+#define UMEM_GET_PAGE_REQUEST _IOWR(UMEMIO, 0x10, struct umem_page_request)
+#define UMEM_MARK_PAGE_CACHED _IOW (UMEMIO, 0x11, struct umem_page_cached)
+#define UMEM_MAKE_VMA_ANONYMOUS _IO (UMEMIO, 0x12)
+
+#endif /* __LINUX_UMEM_H */
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> --- linux-headers/linux/umem.h | 83 ++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 83 insertions(+), 0 deletions(-) create mode 100644 linux-headers/linux/umem.h