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CLOSE 768266 - Kernel <--> User memory access, DMA cache coherency?

To: btg@xxxxxxx
Subject: CLOSE 768266 - Kernel <--> User memory access, DMA cache coherency?
From: pv@xxxxxxxxxxxxxxxxxxxxxx (lord@xxxxxxx)
Date: Wed, 28 Jun 2000 08:08:44 -0700 (PDT)
Cc: slinx-xfs@xxxxxxxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx
Reply-to: sgi.bugs.xfs@xxxxxxxxxxxxxxxxx
Sender: owner-linux-xfs@xxxxxxxxxxx
Webexec: bugs_update,pvincident
Webpv: 192.82.201.231
View Incident: 
http://co-op.engr.sgi.com/BugWorks/code/bwxquery.cgi?search=Search&wlong=1&view_type=Bug&wi=768266

*Status : closed                       Priority : 2                         
 Assigned Engineer : btg               Submitter : mostek                   
 Opened Date : 09/23/99               *Closed Date : 06/28/00               
*Fixed By : lord                      *Fixed By Domain : sgi.com            
*Modified Date : 06/28/00             *Modified User : lord                 
*Modified User Domain : sgi.com       *Fix Description :
==========================
ADDITIONAL INFORMATION (CLOSE)
From: lord@xxxxxxx (BWX)
Date: Jun 28 2000 08:08:43AM
==========================

Closing PVs which were fixed in the XFS linux port a long time
ago.
Description :
There are various calls in XFS to useracc
For now, the routine simply prints "NOT IMPLMENTED".
The functionality expected of this routine goes far beyond
simply checking that the user can indeed access this memory.
The call also potentially faults in pages (B_PHYS).

This area needs to be studies and similar functionality needs
to happen on Linux. This work should be coordinated with
Bill Earl as he does the page/buf cache work.

==========================
ADDITIONAL INFORMATION (UPDATE)
From: mostek@xxxxxxx (BWX)
Date: Sep 23 1999 02:35:55PM
==========================

Try a one time update to Cc: list for slinx-xfs@engr to minimize
mail to the list upon creation.

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