From 38cfa89677eabc85fc23e31e24cee85fb1ecfa54 Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Sat, 13 Apr 2013 10:36:54 +0200 Subject: Rework FAQ machinery to be based on tags instead of filenames. --- faq/sharing_the_user_space.mdwn | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 faq/sharing_the_user_space.mdwn (limited to 'faq/sharing_the_user_space.mdwn') diff --git a/faq/sharing_the_user_space.mdwn b/faq/sharing_the_user_space.mdwn new file mode 100644 index 00000000..0d9dd587 --- /dev/null +++ b/faq/sharing_the_user_space.mdwn @@ -0,0 +1,26 @@ +[[!meta copyright="Copyright © 2010, 2013 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +[[!tag faq/support]] + +[[!meta title="Sharing the userspace between GNU Hurd and the Linux kernel"]] + +Given that both Linux and GNU Hurd are using the [[ELF]] binary +format, it is in theory possible to have a system installation where you can +dual-boot using either the [[Linux]] kernel, or the GNU Hurd, so that +everything but the kernel is shared. +For this, all programs need to agree to rely on +only one abstraction layer, for example the standard C library ([[glibc]]). +(Additionally, for example for [[system call]]s that are not covered by glibc +calls, you'd need to be able to reliably trap and emulate these.) However, +Linux' and the GNU Hurd's [[ABI]]'s have sufficiently diverged, so that this is +not easy to do. That's why you can't currently install a system in this way, +but you need a separate installation of the userspace suited for the Linux +kernel, or the GNU Hurd. -- cgit v1.2.3