I see those statements of direction as saying that the version of z/VM
that will IPL under a z14 directly or under a z/VM running on z14 will
not include z/VM 6.3. It says z/VM 6.3 requires ESA/390 mode which will
no longer be supported by processors after z13, but as literally written
it doesn't exclude the possibility that a future z/VM might still
provide the appearance of older ESA/390 support (like IPL in 31-bit
mode) for some virtual machines that might enable running a 31-bit Linux.
I have no idea whether IBM meant to exclude that possibility, whether
follow-up versions of z/VM will allow for that support, or if there is
even a good argument for allowing it; but the strict wording of the
statements of direction that I have read so far don't seem to rule out
that possibility.
Joel C. Ewing
On 02/10/2016 10:05 AM, Mike Schwab wrote:
> http://www.vm.ibm.com/zvm630/zvm63sum.html
>
> On Wed, Feb 10, 2016 at 10:03 AM, Mike Schwab <[email protected]> wrote:
>> On a z14, you won't be able to run OS 2.9 or earlier, or 31 bit Linux.
>> Not even under z/VM.
>>
>> On Wed, Feb 10, 2016 at 9:30 AM, Joel C. Ewing <[email protected]> wrote:
>>> Clarification appreciated.
>>>
>>> So writing "z13/ 2018 (last IPL-in-31-bit-mode CPU)" could have
>>> eliminated much source of confusion, and by implication indicate that a
>>> 31-bit Linux, the only 31-bit operating system directly supported in a
>>> z13 LPAR, could at that point only be IPLed under z/VM. Any users of
>>> 31-bit Linux would either have to run z/VM or convert to a 64-bit Linux
>>> in order to migrate beyond a z13..
>>> Joel C. Ewing
>>>
>>> On 02/10/2016 08:51 AM, Mike Schwab wrote:
>>>> IBM Statement of direction: z13 will be the last processor that IPLs
>>>> in 31 bit mode. z14 will IPL in 64 bit mode.
>>>>
>>>> On Wed, Feb 10, 2016 at 5:14 AM, R.S. <[email protected]>
>>>> wrote:
>>>>> W dniu 2016-02-09 o 21:03, Mike Schwab pisze:
>>>>>> Last orderable in Summer: z900/ 2006, z990/ 2008, z9/ 2010, z10/2012,
>>>>>> z196/2014.
>>>>>> Estimating in Summer z12/ 2016, z13/ 2018 (last 31 bit mode cpu), z14/
>>>>>> 2020.
>>>>> What is "last 31 bit mode cpu" ???
>>>>> AFAIK last 31 bit machine was 9672 G6, but 31 bit mode programs are still
>>>>> supported as well as 24 bit programs (trimodal architecture).
>>>>>
>>>>> --
>>>>> Radoslaw Skorupka
>>>>> Lodz, Poland
>>>>> ...
>>>>> Joel C. Ewing, Bentonville, AR [email protected]
>>
>> --
>> Mike A Schwab, Springfield IL USA
>> Where do Forest Rangers go to get away from it all?
>
>
--
Joel C. Ewing, Bentonville, AR [email protected]
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