----- Original Message ----- > Hello Mahesh, Dave, > > I am no expert on memory management, but... > > Mahesh Jagannath Salgaonkar <mahesh@xxxxxxxxxxxxxxxxxx> wrote on > 12/22/2011 > 10:06:43: > > > And complicating matters even further, your patch presumes that the > > > kernel has configured CONFIG_SPARSEMEM_EXTREME in conjunction with > > > CONFIG_SPARSEMEM. Would it be possible for an s390x to be configured > > > with just CONFIG_SPARSEMEM alone? > > > > Not sure. I have never tried building s390x kernel configured with just > > CONFIG_SPARSEMEM alone. > > On s390x CONFIG_SPARSEMEM, CONFIG_SPARSEMEM_EXTREME, and SPARSEMEM_VMEMMAP > is always enabled. But old kernels like RHEL4 don't have SPARSEMEM. Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility