Patch-ID#  100163-03
Keywords: vm performance mbuf out of mbufs.
Synopsis: SunOS 4.1; 4.1PSR_A: PMEG-03 and MBUF Jumbo Patch 
Date: 30-May-91
 
SunOS release: 4.1PSR_A

Topic: (4.1PSR_A)PMEG-03 and MBUF Patch 
 
BugId's fixed with this patch: 1038249 1033551 1032572 1032818 1041811

Architectures for which this patch is available:  sun4-490 sun4c 

Patches which may conflict with this patch:

Obsoleted by: 4.1.2

Problem Description:
  This patch combines pmeg-03 and mbuf patches into one.

WARNING: Read the entire readme and INSTALL very carefully.  Backup
system before installing and backup all files that need to be changed.

NOTES: Make sure to install the CORRECT patch on the differnt arch's.

INSTALL: 

There are two things that need to be done.  The first is to copy the
source files to the proper directories.
The second is to place a new set of object files into the
/usr/sys/sun4/OBJ directory.

Source file: param.c, mbuf.h

Object files: machdep.o, map.o, mmu.o, swtch.o, vm_hat.o, vm_hatasm.o,
vm_machdep.o, locore.o, uipc_mbuf.o

AS ROOT:
save the standard modules aside.

 # mv /usr/sys/conf.common/param.c /usr/sys/conf.common/param.c.FCS
 # mv /usr/kvm/sys/sys/mbuf.h /usr/kvm/sys/sys/mbuf.h.FCS
 # mv /sys/sun4/OBJ/machdep.o /sys/sun4/OBJ/machdep.o.FCS
 # mv /sys/sun4/OBJ/map.o /sys/sun4/OBJ/map.o.FCS
 # mv /sys/sun4/OBJ/mmu.o /sys/sun4/OBJ/mmu.o.FCS
 # mv /sys/sun4/OBJ/swtch.o /sys/sun4/OBJ/swtch.o.FCS
 # mv /sys/sun4/OBJ/vm_hat.o /sys/sun4/OBJ/vm_hat.o.FCS
 # mv /sys/sun4/OBJ/vm_hatasm.o /sys/sun4/OBJ/vm_hatasm.o.FCS
 # mv /sys/sun4/OBJ/vm_machdep.o /sys/sun4/OBJ/vm_machdep.o.FCS
 # mv /sys/sun4/OBJ/locore.o /sys/sun4/OBJ/locore.o.FCS
 # mv /sys/sun4/OBJ/uipc_mbuf.o /sys/sun4/OBJ/uipc_mbuf.o.FCS

copy the new modules to /sys/ARCH/OBJ/

 # cp sun{4c,-490}/*.o /sys/sun{4c,4}/OBJ

copy the source files to the correct place.

 # cp source/mbuf.h /usr/kvm/sys/sys/mbuf.h
 # cp source/param.c /usr/sys/conf.common/param.c

Once the files are in place, edit the 'files' file in
/sys/sun4/conf. (/sys/sun4/conf/files) You will need to add an entry to the last
line in the file like:

sun4/vm_hatasm.s               standard
OR
sun4c/vm_hatasm.s              standard

Rerun /etc/config on your kernel and rebuild and install the new kernel.
Please refer the the System and Networking Administration manual to the
chapter on building and installing a custom kernel.