On 07/21/2016 12:33 PM, Maxim Uvarov wrote: > 2016-07-21 18:19 GMT+03:00 Daniel Walker <danielwa at cisco.com>: >> There appears to be no code which checks what is or is not System ram, >> there is nothing that checks the device tree to see what is IO memory, and >> nothing reads /proc/iomem .. So AFAIK nothing cares if it's IO memory, or >> system ram, and there's no method to config things to skip any memory in the >> system, except in makedumpfile which can skip symbols not IO memory. >> >> > Daniel, unfortunately it's long time for me when I looked to powerpc > code. But I just > checked that here: > > kexec-tools-2.0.6/kexec/arch/ppc64/kexec-ppc64.c > > is probably what you need. I have a powerpc32 .. In the powerpc64 file I only see something called "reserved-ranges" which may do what I want, however, that doesn't exist in the 32bit version. It appers the reserved-ranges is used by OPAL firmware , which I don't have. There doesn't appear to be anything generic in ppc64 to exclude device IO memory. Daniel
