[dpdk-dev] [RFC PATCH 0/7] add OSv support

[Takuya ASADA]

Hi DPDK developers,

I'd like to contribute a new EAL to support our open-sourced operating system called "OSv".
It is a new operating system build from scratch for cloud computing, to run application faster with lower footprint on IaaS.
Unlike general propose OS, it is a library OS designed to run single application per one instance, everything run in kernel mode, single memory space.
It's not using Linux kernel but has compatibility with Linux application, not perfect but we already supported various applications such as Cassandra, memcached, Redis, etc.

In DPDK case, PMDs can access devices directly, without kernel driver help.
At this point I haven't enough optimized performance of the EAL yet, but it has potential to get better performance than Linux with fewer resources.

OSv web site: http://osv.io
USENIX ATC'14 paper: https://www.usenix.org/conference/atc14/technical-sessions/presentation/kivity

Takuya ASADA (7):
  mk: support compiling C++ code
  eal: Add extern C on eal_hugepages.h
  eal: Add extern C on eal_thread.h
  eal: Add extern C on eal_private.h
  add OSv support
  virtio: enable MSI-X on OSv
  app/test: support OSv

 app/test/test_eal_flags.c                          |  34 +--
 app/test/test_timer_perf.c                         |   2 +-
 config/{common_linuxapp => common_osvapp}          |  20 +-
 ...xapp-gcc => defconfig_x86_64-native-osvapp-gcc} |   2 +-
 lib/librte_eal/Makefile                            |   2 +
 lib/librte_eal/common/eal_hugepages.h              |   8 +
 lib/librte_eal/common/eal_private.h                |   8 +
 lib/librte_eal/common/eal_thread.h                 |   8 +
 Makefile => lib/librte_eal/osvapp/Makefile         |   5 +-
 lib/librte_eal/osvapp/eal/Makefile                 | 115 ++++++++
 lib/librte_eal/{linuxapp => osvapp}/eal/eal.c      | 123 +-------
 .../{linuxapp => osvapp}/eal/eal_alarm.c           |   0
 .../{linuxapp => osvapp}/eal/eal_debug.c           |   0
 lib/librte_eal/osvapp/eal/eal_hugepage_info.cc     |  63 +++++
 .../{bsdapp => osvapp}/eal/eal_interrupts.c        |   0
 .../eal/eal_lcore.c => osvapp/eal/eal_lcore.cc}    |  53 ++--
 lib/librte_eal/{bsdapp => osvapp}/eal/eal_log.c    |   0
 lib/librte_eal/osvapp/eal/eal_memory.cc            | 148 ++++++++++
 lib/librte_eal/osvapp/eal/eal_pci.cc               | 311 +++++++++++++++++++++
 .../{linuxapp => osvapp}/eal/eal_thread.c          |   0
 lib/librte_eal/osvapp/eal/eal_timer.c              | 121 ++++++++
 .../eal/include/exec-env/rte_interrupts.h          |   0
 lib/librte_pmd_virtio/virtio_ethdev.c              |  15 +-
 mk/exec-env/{linuxapp => osvapp}/rte.app.mk        |   0
 mk/exec-env/{linuxapp => osvapp}/rte.vars.mk       |   6 +-
 mk/internal/rte.compile-pre.mk                     |  41 ++-
 mk/target/generic/rte.vars.mk                      |   4 +
 mk/toolchain/gcc/rte.vars.mk                       |   5 +-
 28 files changed, 907 insertions(+), 187 deletions(-)
 copy config/{common_linuxapp => common_osvapp} (97%)
 copy config/{defconfig_x86_64-native-linuxapp-gcc => defconfig_x86_64-native-osvapp-gcc} (98%)
 copy Makefile => lib/librte_eal/osvapp/Makefile (93%)
 create mode 100644 lib/librte_eal/osvapp/eal/Makefile
 copy lib/librte_eal/{linuxapp => osvapp}/eal/eal.c (87%)
 copy lib/librte_eal/{linuxapp => osvapp}/eal/eal_alarm.c (100%)
 copy lib/librte_eal/{linuxapp => osvapp}/eal/eal_debug.c (100%)
 create mode 100644 lib/librte_eal/osvapp/eal/eal_hugepage_info.cc
 copy lib/librte_eal/{bsdapp => osvapp}/eal/eal_interrupts.c (100%)
 copy lib/librte_eal/{bsdapp/eal/eal_lcore.c => osvapp/eal/eal_lcore.cc} (80%)
 copy lib/librte_eal/{bsdapp => osvapp}/eal/eal_log.c (100%)
 create mode 100644 lib/librte_eal/osvapp/eal/eal_memory.cc
 create mode 100644 lib/librte_eal/osvapp/eal/eal_pci.cc
 copy lib/librte_eal/{linuxapp => osvapp}/eal/eal_thread.c (100%)
 create mode 100644 lib/librte_eal/osvapp/eal/eal_timer.c
 copy lib/librte_eal/{bsdapp => osvapp}/eal/include/exec-env/rte_interrupts.h (100%)
 copy mk/exec-env/{linuxapp => osvapp}/rte.app.mk (100%)
 copy mk/exec-env/{linuxapp => osvapp}/rte.vars.mk (95%)

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2.1.0