Re: [PATCH 0/1] pc-bios: Support List-Directed IPL from ECKD DASD

[Jared Rossi <jrossi@linux.ibm.com>]

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On 2/20/23 10:45 AM, Thomas Huth wrote:
> On 20/02/2023 16.13, Jared Rossi wrote:
>> Hi,
>>
>> Pinging this patch since v2.26.0 of s390-tools adds ECKD DASD 
>> list-directed IPL.
>> This patch set allows QEMU to utilize that new boot pointer format.
>> Any feedback about what needs to be changed for acceptance is much 
>> appreciated.
>
> Where did you send your patches to? I can't find it in neither my 
> qemu-s390x nor my qemu-devel mailing list folders.
>
>  Thomas

Hi Thomas,

I tried to send them toqemu-s390x@nongnu.org  andqemu-devel@nongnu.org  lists with some additional people (including you)
in CC.  The initial mail was on January 30th.  I can resend them if there was a problem with the delivery.

Regards,
Jared Rossi

>
>
>>
>> On 1/30/23 4:24 PM, Jared Rossi wrote:
>>
>>> Add support for List-Directed IPL (LD-IPL) type pointers.
>>>
>>> We check for a boot record indicating LD-IPL and use it if it is valid,
>>> otherwise we use the CCW CDL or LDL format as usual. When a block is 
>>> accessed
>>> during IPL the block number is first calculated based on the 
>>> cylinder, head,
>>> and record numbers included in the block pointer; if LD-IPL has been 
>>> initiated
>>> then each pointer will be interpreted using the new format.
>>>
>>> For simplicity, there is no choice presented to forcibly use CCW-IPL 
>>> if LD-IPL
>>> is available.  Because both sets of pointers ultimately go to the same
>>> kernel/initrd, using CCW- or LD-IPL is transparent to the user.
>>>
>>> One aspect of the user experience that does change is the 
>>> availability of the
>>> interactive boot menu when a loadparm is not specified.  For the 
>>> existing
>>> CCW-IPL, when the user does not specify a loadparm they are 
>>> presented with a
>>> list of boot options; however, this list is only written in the old 
>>> style
>>> pointers.  Therefore, if no loadparm is specified, and LD-IPL is 
>>> supported, the
>>> default boot option will be used automatically.
>>>
>>> Jared Rossi (1):
>>>    pc-bios: Add support for List-Directed IPL from ECKD DASD
>>>
>>>   pc-bios/s390-ccw/bootmap.c | 157 
>>> ++++++++++++++++++++++++++++---------
>>>   pc-bios/s390-ccw/bootmap.h |  30 ++++++-
>>>   2 files changed, 148 insertions(+), 39 deletions(-)
>>>
>

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