In m3obqemtv0@garlic.com, on 04/26/2012
at 10:48 AM, Anne Lynn Wheeler l...@garlic.com said:
page transfers/io is done with channel programs which have real
addresses.
On most machines in the family, but DOS/VSE running with ECPS:VSE used
virtual addresses in channel programs.
--
On Wed, 25 Apr 2012 19:19:32 -0400 Shmuel Metz (Seymour J.)
shmuel+ibm-m...@patriot.net wrote:
:In 2aadp75utk3rndje61uiscu5ocln0lt...@4ax.com, on 04/24/2012
: at 04:23 PM, Binyamin Dissen bdis...@dissensoftware.com said:
:If the invalid page can be paged-in, in what way is it invalid?
:The
In d5php7p6gadkvajvc7aqj71l5ur517p...@4ax.com, on 04/26/2012
at 09:01 AM, Binyamin Dissen bdis...@dissensoftware.com said:
Its invalid because its invalid. Got it. Thanks.
This is a case where I prefer the Burroughs notation; they called the
equivalent flag the presence bit, which is more
shmuel+ibm-m...@patriot.net (Shmuel Metz , Seymour J.) writes:
This is a case where I prefer the Burroughs notation; they called the
equivalent flag the presence bit, which is more neutral.
page transfers/io is done with channel programs which have real
addresses.
virtual memory has segment
On Tue, 24 Apr 2012 17:03:24 -0700, Edward Jaffe edja...@phoenixsoftware.com
wrote:
. . .
I once saw an 0C5 in an MVS guest running under VM. Turned out to be a bug in
VM.
The last time I saw an 0C5 was on a LURA instruction, but I am sufficiently
ancient that I can recall the time when they
-Ursprungligt meddelande-
Från: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] För
Andy Wood
Skickat: den 25 april 2012 09:15
Till: IBM-MAIN@bama.ua.edu
Ämne: Re: Explination of S0C4 reason code 4 and related data areas
On Tue, 24 Apr 2012 17:03:24 -0700, Edward Jaffe
In
CAArMM9Rgbww-g1LRnqXkKL44H=s9e9vsg-0b+a+o-os0rkj...@mail.gmail.com,
on 04/24/2012
at 02:57 PM, Tony Harminc t...@harminc.net said:
However exceptions that occur because of low storage or page
protection are certainly protection exceptions,
Indeed, as are access-list violations.
--
In 2aadp75utk3rndje61uiscu5ocln0lt...@4ax.com, on 04/24/2012
at 04:23 PM, Binyamin Dissen bdis...@dissensoftware.com said:
If the invalid page can be paged-in, in what way is it invalid?
The page-invalid bit is one, per PoOps.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO
In
77142d37c0c3c34da0d7b1da7d7ca3495...@nwt-s-mbx1.rocketsoftware.com,
on 04/24/2012
at 03:02 PM, Bill Fairchild bfairch...@rocketsoftware.com said:
There is another very common way for a massive number of S0C4s to be
generated and instantly resolved, which I have often seen in System
In oiddp7t76842onvoct9tjcfvj2qkhh0...@4ax.com, on 04/24/2012
at 05:21 PM, Binyamin Dissen bdis...@dissensoftware.com said:
But I would suggest that most references to invalid pages do not
cause an 0C4.
Nor did I suggest that most would.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
In 002101cd1f3b$43f7b090$cbe711b0$@net, on 04/20/2012
at 05:19 PM, Micheal Butz michealb...@optonline.net said:
A S0C4 reason code 4 means the storage key and the PSW key don't
match
Only if you're still running OS/360; otherwise 0C4 is seriously
overloaded.
Does it matter what the PSW key
In
caarmm9t_+dh5ijesv1rj9fjr3ct5t0axsoazzkqnqiuxczq...@mail.gmail.com,
on 04/20/2012
at 06:54 PM, Tony Harminc t...@harminc.net said:
There are other possible reasons for an 0C4-04 abend, but 0C4-04 is
always a protection exception of some sort.
I wouldn't call invalid page and invalid
On Mon, 23 Apr 2012 16:58:12 -0400 Shmuel Metz (Seymour J.)
shmuel+ibm-m...@patriot.net wrote:
:In 002101cd1f3b$43f7b090$cbe711b0$@net, on 04/20/2012
: at 05:19 PM, Micheal Butz michealb...@optonline.net said:
:A S0C4 reason code 4 means the storage key and the PSW key don't
:match
:Only if
On Mon, 23 Apr 2012 17:01:11 -0400 Shmuel Metz (Seymour J.)
shmuel+ibm-m...@patriot.net wrote:
:In
:caarmm9t_+dh5ijesv1rj9fjr3ct5t0axsoazzkqnqiuxczq...@mail.gmail.com,
:on 04/20/2012
: at 06:54 PM, Tony Harminc t...@harminc.net said:
:There are other possible reasons for an 0C4-04 abend, but
: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
Binyamin Dissen
Sent: Tuesday, April 24, 2012 8:24 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: Explination of S0C4 reason code 4 and related data areas
If the invalid page can be paged-in, in what way is it invalid
On Tue, 24 Apr 2012 16:23:50 +0300, Binyamin Dissen wrote:
If the invalid page can be paged-in, in what way is it invalid?
Bit 53 of a page table entry is the Page-invalid bit. If it is set in
the page table entry that is used to reference a location in
storage, a Page-translation exception,
On Tue, 24 Apr 2012 09:15:05 -0500 Tom Marchant m42tom-ibmm...@yahoo.com
wrote:
:On Tue, 24 Apr 2012 16:23:50 +0300, Binyamin Dissen wrote:
:If the invalid page can be paged-in, in what way is it invalid?
:Bit 53 of a page table entry is the Page-invalid bit. If it is set in
:the page table
On Tue, 24 Apr 2012 17:21:24 +0300, Binyamin Dissen
bdis...@dissensoftware.com wrote:
On Tue, 24 Apr 2012 09:15:05 -0500 Tom Marchant m42tom-ibmm...@yahoo.com
wrote:
:It is more common for these exceptions to be resolved and the
:instruction retried than it is for the access to result in a S0C4
, 2012 9:40 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: Explination of S0C4 reason code 4 and related data areas
On Tue, 24 Apr 2012 17:21:24 +0300, Binyamin Dissen
bdis...@dissensoftware.com wrote:
On Tue, 24 Apr 2012 09:15:05 -0500 Tom Marchant
m42tom-ibmm...@yahoo.com
wrote:
:It is more common
code 4 and related data areas
:
:On Tue, 24 Apr 2012 17:21:24 +0300, Binyamin Dissen
bdis...@dissensoftware.com wrote:
:
:On Tue, 24 Apr 2012 09:15:05 -0500 Tom Marchant
:m42tom-ibmm...@yahoo.com
:wrote:
:
::It is more common for these exceptions to be resolved and the
::instruction retried than
@bama.ua.edu
Subject: Re: Explination of S0C4 reason code 4 and related data areas
They are not - 0C4's - they are pic-10/11/3E/etc.
S0C4 is when the supervisor says that it cannot resolve the fault.
On Tue, 24 Apr 2012 15:02:10 + Bill Fairchild
bfairch...@rocketsoftware.com wrote:
:There is another
On 23 April 2012 17:01, Shmuel Metz (Seymour J.)
shmuel+ibm-m...@patriot.net wrote:
on 04/20/2012 at 06:54 PM, Tony Harminc t...@harminc.net said:
There are other possible reasons for an 0C4-04 abend, but 0C4-04 is
always a protection exception of some sort.
I wouldn't call invalid page and
On 4/24/2012 8:23 AM, Binyamin Dissen wrote:
They are not - 0C4's - they are pic-10/11/3E/etc.
I once saw an 0C5 in an MVS guest running under VM. Turned out to be a bug in
VM.
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
310-338-0400
On Fri, 20 Apr 2012 17:19:25 -0400 Micheal Butz michealb...@optonline.net
wrote:
:Was wondering If someone could clear up some things for me
:A S0C4 reason code 4 means the storage key and the PSW key don't match
:typically trying to access storage key 0 when the PSW key is key 8
Usually
Hi,
Was wondering If someone could clear up some things for me
A S0C4 reason code 4 means the storage key and the PSW key don't match
typically trying to access storage key 0 when the PSW key is key 8
Two questions arise from this
. Does it matter what the PSW key at the
The storage keys exceptions are determined during the process of executing
the specific instruction. The value of PSW key at any time prior to the
specific instruction being executed is not relevant.
On Fri, Apr 20, 2012 at 2:19 PM, Micheal Butz michealb...@optonline.netwrote:
Hi,
Was
On 20 April 2012 17:19, Micheal Butz michealb...@optonline.net wrote:
A S0C4 reason code 4 means the storage key and the PSW key don't match
There are other possible reasons for an 0C4-04 abend, but 0C4-04 is
always a protection exception of some sort.
typically trying to access storage key 0
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