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

ChangeLog: - Add ARM architecture support. (leiwen(a)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