ia64/xen-unstable

view extras/mini-os/README @ 5867:932fc8a1b38d

# HG changeset patch
# User Rusty Russell <rusty@rustcorp.com.au>
# Node ID a92163adedcfcff0d05c965d09da747f3c8aa13e
# Parent 63ab20781afa311300f3a8e832744292014ea7f6

Remove ill-conceived concept of watches blocking reply on connection which did write/mkdir/rm/setperm etc.
This causes deadlocks in real life, and I can't see a sane way of avoiding them: it is reasonable for someone to ignore watch notifications while doing other actions, and that means that we can do other writes. These writes can block pending other watchers; if one of these is the process blocked awaiting our ack, we deadlock.

diff -r 63ab20781afa -r a92163adedcf tools/xenstore/xenstored_core.c
author cl349@firebug.cl.cam.ac.uk
date Tue Jul 26 13:11:01 2005 +0000 (2005-07-26)
parents 34473973889b
children fc12b08bf4fe 291e816acbf4 b2f4823b6ff0
line source
1 Minimal OS
2 ----------
4 This shows some of the stuff that any guest OS will have to set up.
6 This includes:
8 * installing a virtual exception table
9 * handling virtual exceptions
10 * handling asynchronous events
11 * enabling/disabling async events
12 * parsing start_info struct at start-of-day
13 * registering virtual interrupt handlers (for timer interrupts)
14 * a simple page and memory allocator
15 * minimal libc support
17 Stuff it doesn't show:
19 * modifying page tables
20 * network code
21 * block-device code
24 - to build it just type make.
26 - copy image.final somewhere where dom0 can access it
28 - in dom0
29 # xi_create 16000 test
30 <domid>
31 # xi_build <domid> image.final 0
32 # xi_start <domid>
34 this prints out a bunch of stuff and then every 1000 timer interrupts the
35 system time.