Linux 4.0 commit 2f859d0dad818765117c1cecb24b3bc7f4592074, which
removes the "async_stack" and "panic_stack" members from the "pcpu"
structure. Without the patch, backtraces of active tasks that were
executing I/O or machine check interrupts are not displayed, while
other tasks may generate fatal readmem() errors of type "readmem_ul".
(holzheu@linux.vnet.ibm.com)
adds support for displaying the new s390x vector registers. For
ELF dumps, the registers are taken from the VX ELF notes; for s390
dumps. the registers are taken from memory. The option produces the
same output as the -a option, but also displays the vector registers
for all active tasks.
(holzheu@linux.vnet.ibm.com)
if they are running Linux 3.12 and later kernels. Older kernels
without GENERIC_HARDIRQ support will fail with the error message
"irq: cannot determine number of IRQs".
(sebott@linux.vnet.ibm.com)
on S390X machines. The output of CPU timer and clock comparator has
always been incorrect because:
- We added S390X_WORD_SIZE (8) instead of 4 to get the second word
- We did not left shift the clock comparator by 8
The fix gets the complete 64 bit values and by shifting the clock
comparator correctly.
(holzheu@linux.vnet.ibm.com)
cpus offline themselves during a kdump procedure. This causes an
invalid cpu count determination during crash session initialization
from an ARM vmcore. The patch utilizes the cpu count found in the
cpu_active_map if it is greater than the count in the cpu_online_map.
In addition, the maximum NR_CPUS value for the ARM architecture has
been raised from 4 to 32.
(sdu.liu@huawei.com)
