Patch Name: PHKL_13930

Patch Description: s700_800 10.16 hpux(1M) - large kernel fix

Creation Date: 98/01/22

Post Date:  98/01/27

Hardware Platforms - OS Releases:
	s700: 10.16
	s800: 10.16

Products: N/A

Filesets:
	OS-Core.KERN-RUN

Automatic Reboot?: Yes

Status: Special Release

Critical:
	Yes
	PHKL_13930: PANIC
		This patch fixes the problem of being unable to
		load kernels that are greater than 6.5 MBytes.

Path Name: /hp-ux_patches/s700_800/10.X/PHKL_13930

Symptoms:
	PHKL_13930:
	The user may see a panic.  The type of panic may not
	be the same for all kernels.
	ERROR:   Kernel is too large to boot.
	         Actual:  <actual size>

Defect Description:
	PHKL_13930:
	The hpux(1m) boot loader can not boot a kernel that is
	larger than approximately 6.5 MBytes (0x600000 bytes).
	If the user attempts to build such a kernel, by
	increasing tunable parameters and/or adding subsystems
	or drivers, the system will panic on reboot.

	This restriction is caused by the need for the boot loader
	to remain in memory briefly after the kernel is loaded.
	So that both can exist inside a 16 MB initial memory
	controller, the boot loader is compiled to load at 6.5
	Megabytes.

	This patch changes the boot loader to make room for a large
	kernel (greater than 6.5 MBytes) by moving itself near the
	top of the initial memory module.  As such, the boot loader
	cannot be used in a system where the kernel is within 2.5
	MBytes of the size of the initial memory module.

	The boot area on the root disk will be updated with the new
	boot loader as part of the installation of this patch.

SR:
	0000000000

Patch Files:
	/usr/lib/uxbootlf

what(1) Output:
	/usr/lib/uxbootlf:
		A.00.38 (3250) --  OCT 26, 1994
		hpux, hpux_mlpmp $Date: 98/01/22 10:12:45 PATCH_10.1
			6 (PHKL_13930) $
		HP-UX() #1: Jan 21 1998 17:17:26
		$Revision: SecureWare Level mlpmp37 $ $Header: Secur
			eWare Release hpux_mlpmp $ $Date: Tue Sep 16
			 09:29:08 PDT 1997 $

cksum(1) Output:
	1127755178 707584 /usr/lib/uxbootlf

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies:
	The system must have an initial memory module equal to or
	greater than 16 MBytes.

Supersedes: None

Equivalent Patches: None

Patch Package Size: 770 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHKL_13930

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_13930.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHKL_13930.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_13930.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	Warning: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHKL_13930.text file to
	/var/adm/sw/patch for future reference.

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHKL_13930.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	Before installing this patch:
		1) make sure your system is backed up
	or
		2) make sure that you have some way to restore the
		   boot area on the disk without using the system.