Patch Name: PHKL_27498

Patch Description: s700_800 11.11 Possible HPMC with PCI-to-PCI bridge

Creation Date: 02/07/14

Post Date:  02/08/09

Hardware Platforms - OS Releases:
	s700: 11.11
	s800: 11.11

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_27498: OTHER
		HPMC on A/L/N - class systems with A5838 SCSI/LAN
		combo card.

Category Tags:
	defect_repair general_release critical

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_27498

Symptoms:
	PHKL_27498:
	( SR:8606250050 CR:JAGae16432 )
	On N-class, L-class, or A-class systems that have an A5838
	SCSI/LAN combo card, the system might experience a High
	Priority Machine Check (HPMC) when the SCSI interface on the
	A5838 is reset.

Defect Description:
	PHKL_27498:
	( SR:8606250050 CR:JAGae16432 )
	The A5838 combo card contains a built-in PCI-to-PCI bridge.
	When the SCSI interface on the card goes into reset, the
	SCSI driver does not permit any I/O though the interface.
	This caused I/O activity to back up behind the PCI-to-PCI
	bridge.  The bridge implements a timer, and if an I/O is
	behind the bridge for longer than the timer permits, the
	timer expires and the system will take an HPMC.

	Resolution:
	The PCI-to-PCI bridge code was changed to turn off the
	discard timer.  When this timer is disabled, there will not
	be an HPMC if an I/O waits behind the bridge for an
	unusually long time.

SR:
	8606250050

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libpci.a(p2pb_cdio.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libpci.a(p2pb_cdio.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libpci.a(p2pb_cdio.o):
		p2pb_cdio.c $Date: 2002/07/12 13:43:55 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_27498)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libpci.a(p2pb_cdio.o):
		p2pb_cdio.c $Date: 2002/07/12 13:43:55 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_27498)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	1889886709 4960 /usr/conf/lib/libpci.a(p2pb_cdio.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	676961648 10728 /usr/conf/lib/libpci.a(p2pb_cdio.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

Patch Package Size: 40 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_27498

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_27498.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_27498.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHKL_27498.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_27498.depot

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

		dd if=/tmp/PHKL_27498.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None