--- /dev/null
+Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
+---
+ lib/librte_eal/common/eal_common_options.c | 18 +++++++++++
+ lib/librte_eal/common/eal_internal_cfg.h   |  1 +
+ lib/librte_eal/common/eal_options.h        |  2 ++
+ lib/librte_eal/linuxapp/eal/eal.c          |  4 +--
+ lib/librte_eal/linuxapp/eal/eal_memory.c   | 49 +++++++++++++++++++++++++-----
+ 5 files changed, 64 insertions(+), 10 deletions(-)
+
+diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
+index f470195..4ad41b3 100644
+--- a/lib/librte_eal/common/eal_common_options.c
++++ b/lib/librte_eal/common/eal_common_options.c
+@@ -95,6 +95,7 @@ eal_long_options[] = {
+       {OPT_VFIO_INTR,         1, NULL, OPT_VFIO_INTR_NUM        },
+       {OPT_VMWARE_TSC_MAP,    0, NULL, OPT_VMWARE_TSC_MAP_NUM   },
+       {OPT_XEN_DOM0,          0, NULL, OPT_XEN_DOM0_NUM         },
++      {OPT_SINGLE_FILE,       0, NULL, OPT_SINGLE_FILE_NUM      },
+       {0,                     0, NULL, 0                        }
+ };
+ 
+@@ -933,6 +934,10 @@ eal_parse_common_option(int opt, const char *optarg,
+               core_parsed = 1;
+               break;
+ 
++      case OPT_SINGLE_FILE_NUM:
++              conf->single_file = 1;
++              break;
++
+       /* don't know what to do, leave this to caller */
+       default:
+               return 1;
+@@ -1025,6 +1030,17 @@ eal_check_common_options(struct internal_config *internal_cfg)
+               return -1;
+       }
+ 
++      if (internal_cfg->single_file && internal_cfg->force_sockets == 1) {
++              RTE_LOG(ERR, EAL, "Option --"OPT_SINGLE_FILE" cannot "
++                      "be specified together with --"OPT_SOCKET_MEM"\n");
++              return -1;
++      }
++      if (internal_cfg->single_file && internal_cfg->hugepage_unlink) {
++              RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
++                      "be specified together with --"OPT_SINGLE_FILE"\n");
++              return -1;
++      }
++
+       if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
+               rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
+               RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
+@@ -1056,6 +1072,8 @@ eal_common_usage(void)
+              "  -n CHANNELS         Number of memory channels\n"
+              "  -m MB               Memory to allocate (see also --"OPT_SOCKET_MEM")\n"
+              "  -r RANKS            Force number of memory ranks (don't detect)\n"
++             "  --"OPT_SINGLE_FILE" Create single file for shared memory, and \n"
++             "                      do not promise physical contiguity of memseg\n"
+              "  -b, --"OPT_PCI_BLACKLIST" Add a PCI device in black list.\n"
+              "                      Prevent EAL from using this PCI device. The argument\n"
+              "                      format is <domain:bus:devid.func>.\n"
+diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
+index 7b7e8c8..82b0f97 100644
+--- a/lib/librte_eal/common/eal_internal_cfg.h
++++ b/lib/librte_eal/common/eal_internal_cfg.h
+@@ -61,6 +61,7 @@ struct hugepage_info {
+  */
+ struct internal_config {
+       volatile size_t memory;           /**< amount of asked memory */
++      volatile unsigned single_file;    /**< map all hugepages in single file */
+       volatile unsigned force_nchannel; /**< force number of channels */
+       volatile unsigned force_nrank;    /**< force number of ranks */
+       volatile unsigned no_hugetlbfs;   /**< true to disable hugetlbfs */
+diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
+index a881c62..e5da14a 100644
+--- a/lib/librte_eal/common/eal_options.h
++++ b/lib/librte_eal/common/eal_options.h
+@@ -83,6 +83,8 @@ enum {
+       OPT_VMWARE_TSC_MAP_NUM,
+ #define OPT_XEN_DOM0          "xen-dom0"
+       OPT_XEN_DOM0_NUM,
++#define OPT_SINGLE_FILE       "single-file"
++      OPT_SINGLE_FILE_NUM,
+       OPT_LONG_MAX_NUM
+ };
+ 
+diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
+index 7c78f2d..b6f2ca2 100644
+--- a/lib/librte_eal/linuxapp/eal/eal.c
++++ b/lib/librte_eal/linuxapp/eal/eal.c
+@@ -839,6 +839,8 @@ rte_eal_init(int argc, char **argv)
+       }
+ #endif
+ 
++      eal_thread_init_master(rte_config.master_lcore);
++
+       if (rte_eal_memory_init() < 0) {
+               rte_eal_init_alert("Cannot init memory\n");
+               rte_errno = ENOMEM;
+@@ -877,8 +879,6 @@ rte_eal_init(int argc, char **argv)
+       if (eal_plugins_init() < 0)
+               rte_eal_init_alert("Cannot init plugins\n");
+ 
+-      eal_thread_init_master(rte_config.master_lcore);
+-
+       ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
+ 
+       RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%x;cpuset=[%s%s])\n", diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
+index 618a09b..70c6536 100644
+--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
++++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
+@@ -982,20 +982,53 @@ rte_eal_hugepage_init(void)
+       /* get pointer to global configuration */
+       mcfg = rte_eal_get_configuration()->mem_config;
+ 
+-      /* hugetlbfs can be disabled */
+-      if (internal_config.no_hugetlbfs) {
+-              addr = mmap(NULL, internal_config.memory, PROT_READ | PROT_WRITE,
+-                              MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
++      /* when hugetlbfs is disabled or single-file option is specified */
++      if (internal_config.no_hugetlbfs || internal_config.single_file) {
++              int fd;
++              uint64_t pagesize;
++              unsigned socket_id = rte_socket_id();
++              char filepath[MAX_HUGEPAGE_PATH];
++
++              if (internal_config.no_hugetlbfs) {
++                      eal_get_hugefile_path(filepath, sizeof(filepath),
++                                      "/dev/shm", 0);
++                      pagesize = RTE_PGSIZE_4K;
++              } else {
++                      struct hugepage_info *hpi;
++
++                      hpi = &internal_config.hugepage_info[0];
++                      eal_get_hugefile_path(filepath, sizeof(filepath),
++                                      hpi->hugedir, 0);
++                      pagesize = hpi->hugepage_sz;
++              }
++              fd = open(filepath, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
++              if (fd < 0) {
++                      RTE_LOG(ERR, EAL, "%s: open %s failed: %s\n",
++                                      __func__, filepath, strerror(errno));
++                      return -1;
++              }
++
++              if (ftruncate(fd, internal_config.memory) < 0) {
++                      RTE_LOG(ERR, EAL, "ftuncate %s failed: %s\n",
++                                      filepath, strerror(errno));
++                      return -1;
++              }
++
++              addr = mmap(NULL, internal_config.memory,
++                              PROT_READ | PROT_WRITE,
++                              MAP_SHARED | MAP_POPULATE, fd, 0);
+               if (addr == MAP_FAILED) {
+-                      RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n", __func__,
+-                                      strerror(errno));
++                      RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n",
++                                      __func__, strerror(errno));
+                       return -1;
+               }
+               mcfg->memseg[0].phys_addr = (phys_addr_t)(uintptr_t)addr;
+               mcfg->memseg[0].addr = addr;
+-              mcfg->memseg[0].hugepage_sz = RTE_PGSIZE_4K;
++              mcfg->memseg[0].hugepage_sz = pagesize;
+               mcfg->memseg[0].len = internal_config.memory;
+-              mcfg->memseg[0].socket_id = 0;
++              mcfg->memseg[0].socket_id = socket_id;
++
++              close(fd);
+               return 0;
+       }
+ 
 
--- /dev/null
+diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
+index 68c55f3..1acafcc 100755
+--- a/src/plugins/dpdk/device/init.c
++++ b/src/plugins/dpdk/device/init.c
+@@ -827,6 +827,7 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
+   u8 huge_dir = 0;
+   u8 file_prefix = 0;
+   u8 *socket_mem = 0;
++  u8 *virtio_user = 0;
+ 
+   conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
+   log_level = RTE_LOG_NOTICE;
+@@ -852,6 +853,17 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
+       else if (unformat (input, "no-multi-seg"))
+       conf->no_multi_seg = 1;
+ 
++
++      /* hardcode here for quick poc */
++      else if (unformat (input, "virtio-user %s", &virtio_user))
++        {
++           vec_add1 (conf->eal_init_args, (u8*)"-m 1024");
++           vec_add1 (conf->eal_init_args, (u8*)"--no-pci");
++           vec_add1 (conf->eal_init_args, (u8*)"--single-file");
++           tmp = format (0, "--vdev=virtio_user0,path=%s", virtio_user);
++           vec_add1 (conf->eal_init_args, (u8*)tmp);
++        }
++
+       else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
+                        &sub_input))
+       {
+@@ -1168,18 +1180,6 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
+ 
+ #undef _
+ 
+-  /* set master-lcore */
+-  tmp = format (0, "--master-lcore%c", 0);
+-  vec_add1 (conf->eal_init_args, tmp);
+-  tmp = format (0, "%u%c", tm->main_lcore, 0);
+-  vec_add1 (conf->eal_init_args, tmp);
+-
+-  /* set socket-mem */
+-  tmp = format (0, "--socket-mem%c", 0);
+-  vec_add1 (conf->eal_init_args, tmp);
+-  tmp = format (0, "%s%c", socket_mem, 0);
+-  vec_add1 (conf->eal_init_args, tmp);
+-
+   /* NULL terminate the "argv" vector, in case of stupidity */
+   vec_add1 (conf->eal_init_args, 0);
+   _vec_len (conf->eal_init_args) -= 1;