Not really. The different address spaces are handled inside the kernel. You're looking at dealing with user mode progs, so they shouldn't care what address space they run in.
It looks like SVC 0 is used as a "router" for syscalls > 256 and the actual syscall number defined in /usr/include/asm/unistd.h for the rest. Leland On Tue, Jan 22, 2013 at 5:32 PM, John McKown <john.archie.mck...@gmail.com>wrote: > Thanks. Kills my idea, I guess. > On Jan 22, 2013 5:29 PM, "Mark Post" <mp...@suse.com> wrote: > > > >>> On 1/22/2013 at 04:13 PM, John McKown <john.archie.mck...@gmail.com> > > wrote: > > > OK, if I read and understood all the source, I wouldn't need to ask > this. > > > > > > On Intel, the Kernel is invoked via an INT instruction. And it seems > > > to only use a single INT number at that; number 0x80 (128 decimal). > > > Does the zSeries version do the same, but using the SVC instruction > > > instead? Does it also only use one SVC number (which one)? Does it use > > > any of the more advanced facilities such as PC (non-ss or cp-ss), PR, > > > or access registers? > > > > Linux on System z does use access registers because it sets up primary, > > secondary, etc. address spaces to keep kernel and user space memory > > isolated from each other. > > > > > > Mark Post > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu 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/ > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu 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/ > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu 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/
