Comment 19 for bug 1842774

------- Comment From <email address hidden> 2019-10-07 08:11 EDT-------
Functionality successfully tested fine on disco-proposed 5.0.0-32-generic #34-Ubuntu SMP Wed Oct 2 02:06:00 UTC 2019 s390x s390x s390x GNU/Linux

I can see z15 in the aux vector:

# gdb --quiet ls
Reading symbols from ls...
(No debugging symbols found in ls)
(gdb) start
Temporary breakpoint 1 at 0x45ae
Starting program: /usr/bin/ls

Temporary breakpoint 1, 0x000002aa000045ae in main ()
(gdb) info auxv
33 AT_SYSINFO_EHDR System-supplied DSO's ELF header 0x3fffdffe000
16 AT_HWCAP Machine-dependent CPU capability hints 0x7ffff
6 AT_PAGESZ System page size 4096
17 AT_CLKTCK Frequency of times() 100
3 AT_PHDR Program headers for program 0x2aa00000040
4 AT_PHENT Size of program header entry 56
5 AT_PHNUM Number of program headers 9
7 AT_BASE Base address of interpreter 0x3fffdf80000
8 AT_FLAGS Flags 0x0
9 AT_ENTRY Entry point of program 0x2aa00006320
11 AT_UID Real user ID 0
12 AT_EUID Effective user ID 0
13 AT_GID Real group ID 0
14 AT_EGID Effective group ID 0
23 AT_SECURE Boolean, was exec setuid-like? 0
25 AT_RANDOM Address of 16 random bytes 0x3fffffff73c
31 AT_EXECFN File name of executable 0x3ffffffffec "/usr/bin/ls"
15 AT_PLATFORM String identifying platform 0x3fffffff74c "z15"
0 AT_NULL End of vector 0x0