On 16 August 2012 23:11, David Boyes <[email protected]> wrote: > Again, missed that SLES now has the code to stop in the right place for this > to work properly. Nice to know. Does it still need a EW segment, or is it now > well behaved for shared R/O?
I think you're confused. It's probably 10 years ago that we got the R/O and R/W parts of the Linux kernel in different architectured segments (ie separated by a MB boundary). This allows us to use an NSS that has an EW and SR portion. The EW part basically is pre-initialized R/W memory for the guest. You normally have to do that for NSS because you want page 0 R/W. There is nothing wrong with that, CMS does it too. PROFS even explored this technology for DCSS. Back then when I had to do my own local mods to create the kernel NSS, I preferred to make it stop after the SAVESYS because we did not want a Linux guest to have class E to save it when it liked to. Instead, the minidisk was prepared by Linux and then IPLed by MAINT to create the NSS during the change window in the weekend. I'm not sure that part of the process was picked up, but without the proper mini disks the Linux boot in MAINT will fail and cause no real harm. Rob ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
