Newer s390 kernels provide the new sysfs /sys/firmware/dump/dump_area_size
attribute which specifies the exact size of machine's dump area size.
Use this value if it is present but fall back to the previous and
slightly improved way of computation of dump area size to support
also older s390 kernels w/o the new sysfs attribute. This has
the advantage that util_arch_hsa_maxsize() has no longer to be adapted
with every introduction of yet another machine type in the future.
Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
The machine types are not strictly increasing anymore since Z16, therefore,
we cannot use numerical comparison to find out the correct HSA size
of a machine.
Fixes: 2515832469 ("util_arch: Add IBM z16 as known machine")
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
The util_arch module is supposed to provide general information about
the underlying architecture of the machine in use.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
