[PATCH 00/04] Kexec / Kdump: Release 20061030 (xen-unstable-12025)

[Magnus Damm <magnus@valinux.co.jp>]

[PATCH 00/04] Kexec / Kdump: Release 20061030 (xen-unstable-12025)

This is the 20061030 release of the Kexec / Kdump patches for x86 Xen.

Test Results:
                    Kexec      Kexec      Kexec      Kexec      Kdump
          Hardware   Xen ->     Xen ->   bzImage ->   Xen ->     Xen ->
Arch      Platform   Xen      bzImage      Xen      vmlinux    vmlinux

i386      A         PASS       PASS       PASS       PASS       PASS
i386      B (VMX)   PASS       PASS       PASS       PASS       PASS
i386      C (SVM)   PASS       PASS       PASS       PASS       PASS

i386/PAE  A         PASS       PASS       PASS       PASS       PASS
i386/PAE  B (VMX)   PASS       PASS       PASS       PASS       PASS
i386/PAE  C (SVM)   PASS       PASS       PASS       PASS       PASS

x86_64    D         PASS       PASS       PASS       PASS       PASS
x86_64    B (VMX)   PASS       PASS       PASS       PASS       PASS
x86_64    C (SVM)   PASS       PASS       PASS       PASS       PASS

The tests were made with version 46ecc6c6c77b1fab20b08286209631a00eb1049e
of kexec-tools from the kexec-tools-testing tree which can be found here:
http://www.kernel.org/git/?p=linux/kernel/git/horms/kexec-tools-testing.git

Hardware Platforms:

A: i386     - VA Linux 1220, 2 x Pentium III 866 Mhz, 2 GB
B: Intel VT - Shuttle XPC SD36G5, 1 x Pentium D 930, 1 GB
C: AMD VT   - Shuttle XPC SK22G2, 1 x Athlon64 x2 3800+, 1 GB
D: x86_64   - TYAN Transport GX28 B2881, 2 x Opteron 244 1.8 GHz, 2 GB

Changes:

20061030 - Release 20061030 for xen-unstable-12025

- Rewrote ELF note / register saving code.
  - ELF notes are now present in both the hypervisor and dom0.
    - ELF notes are always in 64-bit file format under Xen.
    - Register contents are no longer copied from dom0 to hypervisor.
  - Registers are now saved directly in the ELF notes.
    - Removes a lot of hairy register saving code, saves memory.
  - The current registers are always saved to keep thing simple.
    - It is up to the tools to locate saved registers on the stack.
  - Xen-specific ELF note code rewritten.
    - Pass version information though ELF notes.
    - Fox x86, pass dom0 pfn_to_mfn_frame_list_list.

- Replaced reserve and crash_note hypercalls ops with range hypercall op.
  - Machine addresses for ELF notes are now exported through /proc/iomem.
  
- Original crash.c-file is now used in Linux.

- Added more comments to xen/include/public/kexec.h
  - KEXEC_TYPE comments.
  - Some description of xen_kexec_image_t.
  - Overview of the hypercall ops, hopefully similar to a story board.

20061023 - Release 20061023 for xen-unstable-11856

- Removed disable_IO_APIC() call on guest side.

- Rewrote hypervisor code to support atomic image update.
  - Merged load and unload code into one function.
  - Replaced locking with spinlocks to avoid xchg() problems.
  - Moved image type into per hypercall-op structure.

- Clean ups and minor fixes.
  - Updated attribution.
  - Header file and comment fixes.
  - Reduced the total number of files and hunks.

20061016 - Release 20061016 for xen-unstable-11760

- "Avoid overwriting the current pgd (V4)" patches accepted upstream
  - Included in Linux-2.6.19-rc1
  - Up-ported Xen code to build on top of merged patches

- Implemented and tested VT-extension support for x86:
  - Intel VMX / IVT "Vanderpool" support for x86_32 and x86_64
  - AMD SVM / AMD-V "Pacifica" support for x86_32 and x86_64

- Command line parameter is now the same as for Linux:
  - For instance, "crashkernel=64M@32M" reserves a 64 MB window at 32 MB

- x86 and ia64 patches are now separated, this release is x86-only

- The x86 port is from this release handled by Magnus Damm

- The ia64 port is handled by Simon Horman

20060931 - Take XIV for xen-unstable-11296 posted by Simon Horman

Enjoy!

/ magnus