[Xen-ia64-devel] [PATCH 00/30] ia64/xen domU take 10

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

This patchset is ia64/xen domU patch take 10 which is rebased
to 2.6.27-rc4.
This patchset implements ia64/xen domU support based on ia64/pv_ops
frame work which was sent as another patchest.

This patchset does the followings.
- Some preparation work. Mainly importing header files to define
  related structures.
- Then, define functions related to hypercall which is the way to
  communicate with Xen hypervisor.
- Add some helper functions which is necessary to utilize
  xen arch generic portion.
- Next implements the xen instance of pv_ops introducing
  pv_info, pv_init_ops, pv_cpu_ops and its assembler counter part,
  pv_iosapic_ops, pv_irq_ops and, pv_time_ops step by step.
- Introduce xen machine vector to describe xen platform.
  By using machine vector, xen domU implementation can be simplified.
- Lastly update Kconfig to allow paravirtualization support and
  xen domU support to compile.

To compile, the changesets in x86/xen branch are also needed.
I expected the necessary patches will be merged soon.
For convenience the working full source is available from
http://people.valinux.co.jp/~yamahata/xen-ia64/for_eagl/linux-2.6-ia64-pv-ops.git/
branch: ia64-pv-ops-2008aug26-xen-ia64

For the status of this patch series
http://wiki.xensource.com/xenwiki/XenIA64/UpstreamMerge

At this phase, we don't address the following issues.
Those will be addressed after the first merge.
- optimization by binary patch
  In fact, we had the patch to do that, but we intentionally dropped
  for patch size/readability/cleanness.
- freeing the unused pages, i.e. pages for unused ivt.S.
- complete save/restore support
- ar.itc paravirtualization which is necessary for save/restore support

Changes from take 9:
- rebased to 2.6.27-rc4
- caught up moving header files.
- caught up the x86 xen changes (mainly xen mode predicate)
- enhanced pv checker to detect inappropriate register usage.
- typo

Changes from take 8:
- rebased to 2.6.26
- updated pvclock-abi.h

Changes from take 7:
- various typos
- clean up sync_bitops.h
- style fix on include/asm-ia64/xen/interface.h
- reserve the "break" numbers in include/asm-ia64/break.h
- xencomm clean up
- dropped NET_SKB_PAD patch. It was a bug in xen-netfront.c.
- CONFIG_IA64_XEN -> CONFIG_IA64_XEN_GUEST
- catch up for x86 pvclock-abi.h
- work around for IPI with IA64_TIME_VECTOR
- add pv checker

Changes from take 6:
- rebased to linux ia64 test tree
- xen bsw_1 simplification.
- add documentation. Documentation/ia64/xen.txt
- preliminary support for save/restore.
- network fix. NET_SKB_PAD.

Changes from take 5:
- rebased to Linux 2.6.26-rc3
- fix ivt.S paravirtualization.
  One instruction was wrongly paravirtualized.
  It wasn't revealed with Xen HVM domain so far, but with real hw
- multi entry point support.
- revised changelog to add CCs.

Changes from take 4:
- fix synch bit ops definitions to prevent accidental namespace clashes.
- rebased and fixed breakages due to the upstream change.

Changes from take 3:
- split the patch set into pv_op part and xen domU part.
- many clean ups.
- introduced pv_ops: pv_cpu_ops and pv_time_ops.

Changes from take 2:
- many clean ups following to comments.
- clean up:assembly instruction macro.
- introduced pv_ops: pv_info, pv_init_ops, pv_iosapic_ops, pv_irq_ops.

Changes from take 1:
Single IVT source code. compile multitimes using assembler macros.

thanks,

Diffstat:
 Documentation/ia64/xen.txt                         |  183 ++++++++
 arch/ia64/Kconfig                                  |   32 ++
 arch/ia64/Makefile                                 |    2 +
 arch/ia64/include/asm/break.h                      |    9 +
 arch/ia64/include/asm/machvec.h                    |    2 +
 arch/ia64/include/asm/machvec_xen.h                |   22 +
 arch/ia64/include/asm/meminit.h                    |    3 +-
 arch/ia64/include/asm/native/pvchk_inst.h          |  263 +++++++++++
 arch/ia64/include/asm/pvclock-abi.h                |    5 +
 arch/ia64/include/asm/sync_bitops.h                |   51 +++
 arch/ia64/include/asm/timex.h                      |    2 +
 .../paravirt_inst.h => include/asm/xen/events.h}   |   35 ++-
 .../asm/xen/grant_table.h}                         |   14 +-
 arch/ia64/include/asm/xen/hypercall.h              |  265 +++++++++++
 arch/ia64/include/asm/xen/hypervisor.h             |   89 ++++
 arch/ia64/include/asm/xen/inst.h                   |  458 ++++++++++++++++++++
 arch/ia64/include/asm/xen/interface.h              |  346 +++++++++++++++
 arch/ia64/include/asm/xen/irq.h                    |   44 ++
 arch/ia64/include/asm/xen/minstate.h               |  134 ++++++
 arch/ia64/include/asm/xen/page.h                   |   65 +++
 arch/ia64/include/asm/xen/privop.h                 |  129 ++++++
 arch/ia64/include/asm/xen/xcom_hcall.h             |   51 +++
 arch/ia64/include/asm/xen/xencomm.h                |   42 ++
 arch/ia64/kernel/Makefile                          |   18 +
 arch/ia64/kernel/acpi.c                            |    5 +
 arch/ia64/kernel/asm-offsets.c                     |   31 ++
 arch/ia64/kernel/nr-irqs.c                         |    1 +
 arch/ia64/kernel/paravirt_inst.h                   |    4 +-
 arch/ia64/kernel/process.c                         |    1 -
 arch/ia64/scripts/pvcheck.sed                      |   32 ++
 arch/ia64/xen/Kconfig                              |   26 ++
 arch/ia64/xen/Makefile                             |   22 +
 arch/ia64/xen/grant-table.c                        |  155 +++++++
 arch/ia64/xen/hypercall.S                          |   91 ++++
 arch/ia64/xen/hypervisor.c                         |   96 ++++
 arch/ia64/xen/irq_xen.c                            |  435 +++++++++++++++++++
 .../ia64/{kernel/paravirt_inst.h => xen/irq_xen.h} |   19 +-
 arch/ia64/xen/machvec.c                            |    4 +
 .../ia64/{kernel/paravirt_inst.h => xen/suspend.c} |   49 ++-
 arch/ia64/xen/time.c                               |  198 +++++++++
 arch/ia64/{kernel/paravirt_inst.h => xen/time.h}   |   11 +-
 arch/ia64/xen/xcom_hcall.c                         |  441 +++++++++++++++++++
 arch/ia64/xen/xen_pv_ops.c                         |  364 ++++++++++++++++
 arch/ia64/xen/xencomm.c                            |  105 +++++
 arch/ia64/xen/xenivt.S                             |   52 +++
 arch/ia64/xen/xensetup.S                           |   83 ++++
 46 files changed, 4450 insertions(+), 39 deletions(-)

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