Messages in this thread |  | | | From | Terry Lambert <> | | Subject | Re: Differences between FreeBSD and Linux system call mechanism | | Date | Thu, 3 Sep 1998 22:57:16 +0000 (GMT) |
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> The odd thing is that iBCS still contains remnants of an attempt at xBSD > emulation, predicated on xBSD using the same call gate as iBCS (lcall 7,0). > Did xBSD switch to something else at some point, or was Terry talking > completely out of his hat about Linux vs. xBSD and call gates?
trap-gate, Trap-gate, TRAP-gate!
Ugh.
BSD does what Linux does, and has for a while.
To the other guy:
Mapping system call pages into a user space program for a speedup is the same speed as using a task-gate. In both cases you either select a TSS decriptor from the GDT or a task-gate descriptor from either the GDT or LDT.
Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html
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