Re: [Qemu-devel] [PATCH 32/32] Relax IDE CHS limits from 16383, 16, 63 to 65535, 16, 255

[Markus Armbruster]

Kevin Wolf <address@hidden> writes:

> Am 29.06.2012 17:34, schrieb Markus Armbruster:
>> New limits straight from ATA4 6.2 Register delivered data transfer
>> command sector addressing.
>> 
>> I figure the old sector limit 63 was blindly copied from the BIOS
>> int 13 limit.  Doesn't apply to the hardware.  No idea where the old
>> cylinder limit comes from.
>> 
>> Signed-off-by: Markus Armbruster <address@hidden>
>
> Now I think we have the very same thing in IDE, SCSI and virtio-blk.
> Would it make sense to have a helper function in hd-geometry.c that
> takes and validates the geometry from a BlockConf, applies defaults and
> puts the result into device state fields passed by reference?

I can look into this, but I'm afraid we'd need two helpers, because of
IDE complications.


When it comes to block device models, IDE is *always* the troublemaker.
And a big reason for that is the messy data structures that are
impractical to clean up while we still support non-qdevified IDE.  Which
we do almost three years after IDE qdevification.

The laggards are:

* mac99, g3beige
  Alexander Graf <address@hidden>

* spitz, borzoi, terrier
  Andrzej Zaborowski <address@hidden>

* tosa
  unmaintained

* r2d
  Magnus Damm <address@hidden>

Any plans to drag these boards into the current decade already?