ia64/xen-unstable

view extras/mini-os/README @ 14777:a6800d989059

[IA64] Skip MCA setup on domU

This effectively automates passing the nomca flag to domUs,
preventing them from setting up CMC/CPE interrupts. This saves
3 dynamic IRQs per processor and allows us to get domUs up to 64
vCPUs without increasing the number of dynamic IRQs available.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
author Alex Williamson <alex.williamson@hp.com>
date Wed Apr 11 07:28:29 2007 -0600 (2007-04-11)
parents 0839db0aa611
children 851dc6b70494
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 - to start it do the following in domain0 (assuming xend is running)
27 # xm create domain_config
29 this starts the kernel and prints out a bunch of stuff and then once
30 every second the system time.