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Diffstat (limited to 'faq/support/sharing_the_user_space.mdwn')
| -rw-r--r-- | faq/support/sharing_the_user_space.mdwn | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/faq/support/sharing_the_user_space.mdwn b/faq/support/sharing_the_user_space.mdwn new file mode 100644 index 00000000..2c31c22b --- /dev/null +++ b/faq/support/sharing_the_user_space.mdwn @@ -0,0 +1,24 @@ +[[!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]]."]]"""]] + +[[!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. |