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Kevin Lim 78de00091b 3 memory system fixes: 
1. Update packet's flags properly when a snoop happens
2. Don't allow accesses to read a block's data if the block has outstanding MSHRs.  This avoids a RAW hazard in MP systems that the memory system was not detecting properly earlier (a write required a block to upgrade, and while the upgrade was outstanding, a read came along and read old data).
3. Update MSHR's request upon a response being handled.  If the MSHR has more targets than it can respond to in one cycle, then its request must be properly updated to the new head of the targets list.

src/mem/bus.cc:
    Update packet's flags properly upon snoop.
src/mem/cache/cache_impl.hh:
    Be sure to not allow accesses to a block with outstanding MSHRs.
src/mem/cache/miss/miss_queue.cc:
    Update MSHR's request upon a response being handled.

--HG--
extra : convert_revision : 76a9abc610ca3f1904f075ad21637148a41982d6
2007-03-23 13:09:37 -04:00
build_opts Override default SConscript options and only build the SimpleCPUs. 2006-12-05 11:12:18 -05:00
configs fix some checkpointing annoyances 2007-01-30 18:21:42 -05:00
ext New directory structure: 2006-05-22 14:29:33 -04:00
src 3 memory system fixes: 2007-03-23 13:09:37 -04:00
tests A couple of minor fixes. 2007-03-23 11:22:43 -04:00
util Nate's utility for compiling m5 2006-12-17 18:58:50 -08:00
AUTHORS AUTHORS: 2006-08-17 00:44:54 -04:00
LICENSE Remove authors from copyright. 2006-05-28 23:26:15 -04:00
README Update for 2.0 beta 1 patch 1 2006-08-25 15:17:25 -04:00
RELEASE_NOTES add 2.0b2 release notes 2006-11-28 16:02:13 -05:00
SConstruct I missed a couple of things 2007-01-27 15:47:18 -05:00

README 

This is release 2.0_beta (patch 1) of the M5 simulator.

For detailed information about building the simulator and getting
started please refer to http://www.m5sim.org.

Specific pages of interest are:
http://www.m5sim.org/wiki/index.php/Compiling_M5
http://www.m5sim.org/wiki/index.php/Running_M5

Short version:

1. If you don't have SCons version 0.96.91 or newer, get it from
http://wwww.scons.org.

2. If you don't have SWIG version 1.3.28 or newer, get it from
http://wwww.swig.org.

3. In this directory, type 'scons build/ALPHA_SE/tests/debug/quick'.  This
will build the debug version of the m5 binary (m5.debug) for the Alpha
syscall emulation target, and run the quick regression tests on it.

If you have questions, please send mail to m5-users@m5sim.org

WHAT'S INCLUDED (AND NOT)
-------------------------

The basic source release includes these subdirectories:
 - m5: 
   - src: source code of the m5 simulator
   - tests: regression tests
   - ext: less-common external packages needed to build m5
   - system/alpha: source for Alpha console and PALcode

To run full-system simulations, you will need compiled console,
PALcode, and kernel binaries and one or more disk images.  These files
are collected in a separate archive, m5_system.tar.bz2.  This file
can he downloaded separately.

M5 supports Linux 2.4/2.6, FreeBSD, and the proprietary Compaq/HP
Tru64 version of Unix. We are able to distribute Linux and FreeBSD
bootdisks, but we are unable to distribute bootable disk images of
Tru64 Unix. If you have a Tru64 license and are interested in
obtaining disk images, contact us at m5-dev@eecs.umich.edu.