[Crash-utility] [ANNOUNCE] crash gcore command, version 1.1 available

[HATAYAMA Daisuke]

ChangeLog:

 - Add ARM architecture support.
   (leiwen at marvell.com)

 - Fix wrongly using VM_ALWAYSDUMP value. On RHEL5, VM_ALWAYSDUMP is
   defined as 0x04000000, but on RHEL6 and later upstream kernel, as
   0x08000000. (0x08000000 had ever been used for VM_CAN_INVALIDATE
   and now in the current 3.x version for VM_CAN_NONLINEAR.) Without
   this fix, VDSO page is not included in a generated corefile. Then,
   VDSO page is obviously not visible, and gdb displays broken
   backtrace for the corefile where a task enters kernel mode via the
   VDSO.

 - Periodic updates following RHEL minor releases. See below for list
   of the current supported kernels.

Supported Kernels:

 * Upstream Kernels

   version  | x86  |x86_64| ARM
 -----------+------+------+-----
   2.6.35.7 |  --  |  --  | OK
   2.6.36   |  OK  |  OK  | --
   3.0.8    |  --  |  --  | OK

 OK : Support
 -- : Not support

 * RHEL Kernels (#1

          | x86  |     x86_64
  version |      | 64 bit ; 32 bit
 ---------+------+--------+---------
    4.8   |  OK  |   OK   |   --
 ---------+------+--------+---------
    5.5   |  OK  |   OK   |   OK
    5.6   |  --  |   OK   |   OK
    5.7   |  --  |   OK   |   OK
    5.8   |  --  |   OK   |   OK
 ---------+------+--------+---------
    6.0   |  OK  |   OK   |   OK
    6.1   |  --  |   OK   |   OK
    6.2   |  --  |   OK   |   OK

  #1) RHEL4 is based on 2.6.9 kernel,
      RHEL5 is based on 2.6.18 kernel and
      RHEL6 is based on 2.6.32 kernel.

Note:

 1) The versions signed OK are the ones I did verification. gcore
 might work well on kernel versions near the supported ones.

 2) The reason why I separate table for RHEL series and table for
 upstream series is that RHEL kernels are being made based on upstream
 kernels _plus a variety of additional patches_. So, rigorously, they
 must be thought of as differnet kernels. However, just as 1), it
 would be likely that gcore works well on vmcores for upstream kernels
 near the corresponding RHEL versions.

Thanks.
HATAYAMA Daisuke
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