On 26.04.2013, at 18:01, Christian Borntraeger wrote: > On 26/04/13 17:48, Alexander Graf wrote: > >>> So I suggest to go with this patch and implement later on what we >>> agree upon? >> >> I don't see how having "first device we find" is any better than a >> rushed interface we need to agree on right before 1.5 hard freeze. > > Exactly, find first device isnt better ;-) > See, the current code chooses the first subchannel that matches. This > boils down to "a random disk" as soon as you have more than one. > > With this patch the user can at least specify the devno of the disk.It > even works out of the box with libvirt. > > Let's just release 1.5 with the very simple one and then go for something > awesome in the next version. > > Exactly - and having a list is more in the awesome area. Beiing able to > specify the first disk and pass that in a register to the bios is of > course not a full-features interface, but it works and can be changed.
My main concern is backwards compatibility. If we introduce a command line interface now, we have to support it forever. I'd rather only support one interface, rather than 2 out of which one is only legacy for 1.5 compatibility. > Just to double check: do you agree that we can change the interface between > ipl device and bios at any time? I think that's a fair thing to do, though I wouldn't encourage it. Alex
