Patch Name: PHKL_28139

Patch Description: s700_800 11.11 vPar enablement patch, select, nanosleep

Creation Date: 03/03/05

Post Date: 03/05/27

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: No

Category Tags:
	defect_repair enhancement general_release

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_28139

Symptoms:
	PHKL_28139:
	( SR:8606266312 CR:JAGae30561 )
	The nanosleep(2) system call may expire prematurely if the
	sleep time specified by the developer is not an integer
	multiple of a clock tick duration (10ms). For example: A
	sleep time of 19ms may timeout before 19ms has elapsed.

	PHKL_24677:
	( SR:8606199504 CR:JAGad68691 )
	Select(2), when called with zero file descriptors and a zero
	timeout value, does not return immediately as it is
	suppossed to, according to the man page.

	PHKL_24564:
	( SR:8606204639 CR:JAGad73821 )
	This patch is a member of a set of patches needed to enable
	the HP-UX Virtual Partitions product. When the HP-UX Virtual
	Partitions product (VPARSBASE or T1335AA) is installed, it
	will install the full set of required patches for that
	product, including this patch.

	If the HP-UX Virtual Partitions product is not installed,
	this change will have no impact on your system.

Defect Description:
	PHKL_28139:
	( SR:8606266312 CR:JAGae30561 )
	HPUX supports timer granularity of one clock tick (10ms),
	and rounds off the user specified time to this clock tick
	boundary.  A rounding off error in nanosleep() path causes
	an interval less than 10ms to be discarded causing
	nanosleep() to return early.

	Resolution:
	Round up a sub-10ms interval to the next clock tick
	period to ensure that nanosleep() timer does not expire
	prematurely.

	PHKL_24677:
	( SR:8606199504 CR:JAGad68691 )
	When calling select(2) with zero file descriptors, select(2)
	behaves as a sleep routine, returning back to the user after
	the specified timeout.  Currently, when a timeout of zero is
	specified, select(2) sleeps for one clock tick before
	realizing the timout has been exceeded.

	Resolution:
	Select(2) now detects when the user application requests a
	zero timeout value and acts appropriately.

	PHKL_24564:
	( SR:8606204639 CR:JAGad73821 )
	This patch contains minor enhancements required to support
	the HP-UX Virtual Partitions product.

	Resolution:
	Enhancements added to support CPU migration.

Enhancement:
	No (superseded patches contained enhancements)
	PHKL_28139:
		Enhancements were delivered in a patch this one has
		superseded.  Please review the Defect Description
		text for more information.

SR:
	8606199504 8606204639 8606266312

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

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

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libpm.a(pm_timers.o):
		pm_timers.c $Date: 2003/03/04 18:15:34 $Revision: r1
			1.11/3 PATCH_11.11 (PHKL_28139)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libpm.a(pm_timers.o):
		pm_timers.c $Date: 2003/03/04 18:15:34 $Revision: r1
			1.11/3 PATCH_11.11 (PHKL_28139)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	3759454976 10724 /usr/conf/lib/libpm.a(pm_timers.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	2248332504 23984 /usr/conf/lib/libpm.a(pm_timers.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_24677 PHKL_24564

Equivalent Patches: None

Patch Package Size: 60 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_28139

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_28139.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_28139.  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_28139.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_28139.depot

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

		dd if=/tmp/PHKL_28139.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None