** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1562004
Title: S390: glibc does not use direct socket-syscalls, but the multiplexer- socket-syscall. Status in linux package in Ubuntu: New Bug description: == Comment: #0 - Stefan Liebler <s...@de.ibm.com> - 2016-03-24 11:16:16 == Hi, the glibc socket functions, like connect(), bind(), socket(), ... do currently use svc 102 (multiplexer-socket-syscall: see /usr/include/s390x-linux-gnu/asm/unistd.h: #define __NR_socketcall 102) The direct socketsyscalls are also available for s390 since kernel 4.3: #define __NR_connect 362 #define __NR_bind 361 #define __NR_socket 359 ... The kernel in my used ubuntu alpha is 4.4.0-15 and the glibc 2.23. This glibc release can use these direct socket-syscalls, if glibc is configured with "--enable-kernel=4.3.0". Or even better, use the kernel-level, which will be used in the first release for s390. Here is the kernel commit: "s390: wire up separate socketcalls system calls" https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=977108f89c989b1eeb5c8d938e1e71913391eb5f and the glibc commit: "S390: Call direct system calls for socket operations." https://sourceware.org/git/?p=glibc.git;a=commit;h=016495b818cb61df7d0d10e6db54074271b3e3a5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1562004/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
