On Fri, Mar 15, 2013 at 03:35:48PM +0000, Peter Maydell wrote: > On 5 March 2013 00:44, Aurelien Jarno <aurel...@aurel32.net> wrote: > > On Tue, Mar 05, 2013 at 08:22:57AM +0800, Peter Maydell wrote: > >> What effect does this actually have on the user experience? > > > > The effect is that the user don't has to specify the interface type. > > Basically: > > > > -drive file=/path/to/file,if=sd > > can be replaced by > > -drive file=/path/to/file > > > > It means the user doesn't have to know the details of the machine to > > know how to attach a disk. Note that the user here can also be a script, > > which then becomes a bit simpler. > > I'm not convinced this is a good thing -- I think you should have > to know that you're attaching an SD card and not a hard disk, > because the performance is much worse. In particular if you > don't specify 'cache=writeback' your performance will be > dreadful, so you need to do something different from hard > disks anyhow. >
Being a good thing or not, the current code is wrong: the default interface type is set to SCSI (I guess it has been copied from versatilepb.c), while the vexpress machine has no SCSI interface. -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net
