Patch-ID# 103974-01
Keywords: dr CS6400 cray4d
Synopsis: SunOS 5.5 CS6400: dr driver patch
Date: Nov/18/96

Solaris Release: 2.5_CS6400

SunOS Release: 5.5_CS6400

Unbundled Product:

Unbundled Release:

Xref:

Topic: SunOS 5.5 CS6400: dr driver patch

   NOTE:	This patch replaces the Cray patch C642005-02.
   		BugID's with six digits or less are related to Cray SPR's.

BugId's fixed with this patch: 100100 103417

   NOTE: Cray SPR's fixed with this patch: 100100 103417

Changes incorporated in this version: 103417

   NOTE: Cray SPR changes incorporated in this version: 103417

Relevant Architectures: sparc
NOTE:sparc.cray4d

Patches accumulated and obsoleted by this patch: 642005-02

Patches which conflict with this patch:

Patches required with this patch:

Obsoleted by:

Files included with this patch:

/platform/cray4d/kernel/drv/dr

Problem Description:

(from 642005-01)

SPR: 103417: 2.5 PATCH FOR SPR 103392: DR DETACH CAUSES A WATCHDOG SYNC WHEN THE BOOT DEVICE

Previously, when the boot device was AP and VxVM control, attempting
a DR detach caused a watchdog sync as result of stack overflow.  This
patch corrects the problem by reducing the number of calls on the
stack at the point in which the overflow occured by now loading the
RT module when the DR module is loaded.

(from 642005-01)

100100: 2.5 PATCH FOR SPR 99967: WHEN LOADING DR DRIVER, CS6400 PANICS CS6400 WITH DATA FAULT

Performing a modload of the DR driver module (/kernel/drv/dr) will
cause a DATA FAULT panic if the system contains memory with holes, i.e.
bad SIMMs.  The workaround is to either repair the bad simms or
blacklist the memory group containing them.

Patch Installation Instructions:
--------------------------------
Refer to the Install.info file within the patch for instructions on
using the generic 'installpatch' and 'backoutpatch' scripts provided
with each patch. Any other special or non-generic installation
instructions should be described below.

Special Install Instructions:
-----------------------------

None.
