[Qemu-devel] [PATCH 00/40] RFC: Xenner

[Alexander Graf]

Some of you might remember Gerd's xenner project. The basic motivation is to
run Xen PV guests in KVM with the normal KVM architecture.

In order to achieve this, Xenner contains of two pieces:

  1) Xenner Qemu pieces
  2) Xenner guest kernel

Part 1 is partially in qemu already. The xen support framework that Gerd pushed
a while back can be used just as well for xenner. Some parts like a special PV
device to communicate with xenner and, mechanisms to instantiate a VM and 
replacements for xen infrastructure are provided in patches here.

Part 2 is a completely self-contained piece of code. The xenner guest kernel
runs in the VM's CPL0 context. It translates guest hypercalls to hardware calls
that KVM implements, like CR3 modifications or LAPIC accesses.

This patch set tries to revive Gerd's code by integrating as much as possible
into the qemu code base. My ultimate goal is to isolate the qemu xenner code
well enough to be able to run an i386 xen pv guest with tcg on powerpc.

I'm sending this set out in the hope to receive feedback. Do you think this is
a good idea? Can you spot some glitches in the code that I overlooked? See
the list below for things I'm aware of to be broken.

Missing pieces:

  - VMstate
  - Full qdev check
  - endianness check
  - build qemu w/o xen headers
  - find a replacement for qemu_map_foreign_batch


Usage:

  (pv-grub)

  qemu-system-x86_64 -M xenpv -kernel /usr/lib/xen/boot/pv-grub-x86_64 \
    -drive file=/images/xen.raw,if=xen -nographic -enable-kvm

  (direct kernel boot)

  qemu-system-x86_64 -M xenpv -kernel /boot/vmlinux-xen -initrd \
    /boot/initrd-xen -append xencons=tty -drive file=/images/xen.raw,if=xen \
    -nographic -enable-kvm

  (with graphics)

  qemu-system-x86_64 -M xenpv -kernel /boot/vmlinux-xen -initrd \
    /boot/initrd-xen -drive file=/images/xen.raw,if=xen -vga xenfb -vnc :0 \
    -enable-kvm


I'm looking very much forward to constructive feedback!

Alex


Alexander Graf (39):
  elf: Move translate_fn to helper struct
  elf: Add notes implementation
  elf: add header notification
  elf: add section analyzer
  xen-disk: disable aio
  xenner: kernel: 32 bit files
  xenner: kernel: 64-bit files
  xenner: kernel: Global data
  xenner: kernel: Hypercall handler (i386)
  xenner: kernel: Hypercall handler (x86_64)
  xenner: kernel: Hypercall handler (generic)
  xenner: kernel: Headers
  xenner: kernel: Instruction emulator
  xenner: kernel: lapic code
  xenner: kernel: Main (i386)
  xenner: kernel: Main (x86_64)
  xenner: kernel: Main
  xenner: kernel: Makefile
  xenner: kernel: mmu support for 32-bit PAE
  xenner: kernel: mmu support for 32-bit normal
  xenner: kernel: mmu support for 64-bit
  xenner: kernel: generic MM functionality
  xenner: kernel: printk
  xenner: kernel: KVM PV code
  xenner: kernel: xen-names
  xenner: add xc_dom.h
  xenner: libxc emu: evtchn
  xenner: libxc emu: grant tables
  xenner: libxc emu: memory mapping
  xenner: libxc emu: xenstore
  xenner: emudev
  xenner: core
  xenner: PV machine
  xenner: Domain Builder
  xen: only create dummy env when necessary
  Add xenner binaries
  xenner: integrate into build system
  xenner: integrate into xen pv machine
  xen: add sysrq support

Gerd Hoffmann (1):
  qdev-ify: xen backends

 Makefile                        |    6 +
 Makefile.target                 |   16 +-
 configure                       |   21 +-
 hmp-commands.hx                 |   24 +
 hw/an5206.c                     |    2 +-
 hw/arm_boot.c                   |    2 +-
 hw/armv7m.c                     |    2 +-
 hw/cris-boot.c                  |    4 +-
 hw/dummy_m68k.c                 |    2 +-
 hw/elf_ops.h                    |  105 ++++-
 hw/loader.c                     |   50 ++-
 hw/loader.h                     |   24 +-
 hw/mcf5208.c                    |    2 +-
 hw/mips_fulong2e.c              |    4 +-
 hw/mips_malta.c                 |    4 +-
 hw/mips_mipssim.c               |    6 +-
 hw/mips_r4k.c                   |    6 +-
 hw/multiboot.c                  |    2 +-
 hw/petalogix_s3adsp1800_mmu.c   |    8 +-
 hw/ppc440_bamboo.c              |    2 +-
 hw/ppc_newworld.c               |    6 +-
 hw/ppc_oldworld.c               |    6 +-
 hw/ppce500_mpc8544ds.c          |    2 +-
 hw/sun4m.c                      |   10 +-
 hw/sun4u.c                      |    7 +-
 hw/virtex_ml507.c               |    2 +-
 hw/xc_dom.h                     |  273 +++++++++++
 hw/xen.h                        |    2 +
 hw/xen_backend.c                |  176 +++++---
 hw/xen_backend.h                |   10 +-
 hw/xen_console.c                |   10 +-
 hw/xen_disk.c                   |   12 +-
 hw/xen_domainbuild.c            |    8 +
 hw/xen_interfaces.c             |  108 ++++
 hw/xen_interfaces.h             |  111 +++++
 hw/xen_machine_pv.c             |   44 ++-
 hw/xen_nic.c                    |   10 +-
 hw/xen_redirect.h               |   56 +++
 hw/xenfb.c                      |   14 +-
 hw/xenner.h                     |   52 ++
 hw/xenner_core.c                |  224 +++++++++
 hw/xenner_dom_builder.c         |  406 +++++++++++++++
 hw/xenner_emudev.c              |  107 ++++
 hw/xenner_emudev.h              |  108 ++++
 hw/xenner_guest_store.c         |  494 +++++++++++++++++++
 hw/xenner_libxc_evtchn.c        |  467 ++++++++++++++++++
 hw/xenner_libxc_gnttab.c        |   91 ++++
 hw/xenner_libxc_if.c            |  124 +++++
 hw/xenner_libxenstore.c         |  709 +++++++++++++++++++++++++++
 hw/xenner_pv.c                  |  135 +++++
 monitor.c                       |    8 +
 pc-bios/xenner/Makefile         |   72 +++
 pc-bios/xenner/apicdef.h        |  173 +++++++
 pc-bios/xenner/cpufeature.h     |  129 +++++
 pc-bios/xenner/list.h           |  169 +++++++
 pc-bios/xenner/msr-index.h      |  278 +++++++++++
 pc-bios/xenner/printk.c         |  682 ++++++++++++++++++++++++++
 pc-bios/xenner/processor.h      |  326 ++++++++++++
 pc-bios/xenner/shared.h         |  188 +++++++
 pc-bios/xenner/xen-names.c      |  141 ++++++
 pc-bios/xenner/xen-names.h      |   68 +++
 pc-bios/xenner/xenner-data.c    |  142 ++++++
 pc-bios/xenner/xenner-emudev.h  |   57 +++
 pc-bios/xenner/xenner-hcall.c   | 1031 +++++++++++++++++++++++++++++++++++++++
 pc-bios/xenner/xenner-hcall32.c |  299 +++++++++++
 pc-bios/xenner/xenner-hcall64.c |  323 ++++++++++++
 pc-bios/xenner/xenner-instr.c   |  405 +++++++++++++++
 pc-bios/xenner/xenner-lapic.c   |  622 +++++++++++++++++++++++
 pc-bios/xenner/xenner-main.c    |  875 +++++++++++++++++++++++++++++++++
 pc-bios/xenner/xenner-main32.c  |  390 +++++++++++++++
 pc-bios/xenner/xenner-main64.c  |  412 ++++++++++++++++
 pc-bios/xenner/xenner-mm.c      |  105 ++++
 pc-bios/xenner/xenner-mm32.c    |  314 ++++++++++++
 pc-bios/xenner/xenner-mm64.c    |  369 ++++++++++++++
 pc-bios/xenner/xenner-mmpae.c   |  444 +++++++++++++++++
 pc-bios/xenner/xenner-pv.c      |  186 +++++++
 pc-bios/xenner/xenner.h         |  684 ++++++++++++++++++++++++++
 pc-bios/xenner/xenner32-pae.lds |   37 ++
 pc-bios/xenner/xenner32.S       |  441 +++++++++++++++++
 pc-bios/xenner/xenner32.h       |  191 ++++++++
 pc-bios/xenner/xenner32.lds     |   37 ++
 pc-bios/xenner/xenner64.S       |  400 +++++++++++++++
 pc-bios/xenner/xenner64.h       |  117 +++++
 pc-bios/xenner/xenner64.lds     |   38 ++
 pc-bios/xenner32-pae.elf        |  Bin 0 -> 310874 bytes
 pc-bios/xenner32.elf            |  Bin 0 -> 296741 bytes
 pc-bios/xenner64.elf            |  Bin 0 -> 342244 bytes
 87 files changed, 14089 insertions(+), 140 deletions(-)
 create mode 100644 hw/xc_dom.h
 create mode 100644 hw/xen_interfaces.c
 create mode 100644 hw/xen_interfaces.h
 create mode 100644 hw/xen_redirect.h
 create mode 100644 hw/xenner.h
 create mode 100644 hw/xenner_core.c
 create mode 100644 hw/xenner_dom_builder.c
 create mode 100644 hw/xenner_emudev.c
 create mode 100644 hw/xenner_emudev.h
 create mode 100644 hw/xenner_guest_store.c
 create mode 100644 hw/xenner_libxc_evtchn.c
 create mode 100644 hw/xenner_libxc_gnttab.c
 create mode 100644 hw/xenner_libxc_if.c
 create mode 100644 hw/xenner_libxenstore.c
 create mode 100644 hw/xenner_pv.c
 create mode 100644 pc-bios/xenner/Makefile
 create mode 100644 pc-bios/xenner/apicdef.h
 create mode 100644 pc-bios/xenner/cpufeature.h
 create mode 100644 pc-bios/xenner/list.h
 create mode 100644 pc-bios/xenner/msr-index.h
 create mode 100644 pc-bios/xenner/printk.c
 create mode 100644 pc-bios/xenner/processor.h
 create mode 100644 pc-bios/xenner/shared.h
 create mode 100644 pc-bios/xenner/xen-names.c
 create mode 100644 pc-bios/xenner/xen-names.h
 create mode 100644 pc-bios/xenner/xenner-data.c
 create mode 100644 pc-bios/xenner/xenner-emudev.h
 create mode 100644 pc-bios/xenner/xenner-hcall.c
 create mode 100644 pc-bios/xenner/xenner-hcall32.c
 create mode 100644 pc-bios/xenner/xenner-hcall64.c
 create mode 100644 pc-bios/xenner/xenner-instr.c
 create mode 100644 pc-bios/xenner/xenner-lapic.c
 create mode 100644 pc-bios/xenner/xenner-main.c
 create mode 100644 pc-bios/xenner/xenner-main32.c
 create mode 100644 pc-bios/xenner/xenner-main64.c
 create mode 100644 pc-bios/xenner/xenner-mm.c
 create mode 100644 pc-bios/xenner/xenner-mm32.c
 create mode 100644 pc-bios/xenner/xenner-mm64.c
 create mode 100644 pc-bios/xenner/xenner-mmpae.c
 create mode 100644 pc-bios/xenner/xenner-pv.c
 create mode 100644 pc-bios/xenner/xenner.h
 create mode 100644 pc-bios/xenner/xenner32-pae.lds
 create mode 100644 pc-bios/xenner/xenner32.S
 create mode 100644 pc-bios/xenner/xenner32.h
 create mode 100644 pc-bios/xenner/xenner32.lds
 create mode 100644 pc-bios/xenner/xenner64.S
 create mode 100644 pc-bios/xenner/xenner64.h
 create mode 100644 pc-bios/xenner/xenner64.lds
 create mode 100755 pc-bios/xenner32-pae.elf
 create mode 100755 pc-bios/xenner32.elf
 create mode 100755 pc-bios/xenner64.elf