Hi, On Mon, Mar 22, 2010 at 02:26:11AM -0400, john cooper wrote: > This is a tad ironic as that is how this saga begun. Namely stuffing > 20 bytes of serial number string into the virtio-blk PCI config space > on qemu's side and pushing it over to the guest driver. I exposed this > to the guest app via a new ioctl cmd which itself was the original > point of contention. Someone took issue with introducing a new > interface citing the existence of ATA and SCSI counterparts. However > dragging in the associated baggage in order to emulate those interfaces > unintentionally bloated usage of the config space to the point of breakage. > To address this I'd moved from using config space to an unused BAR which > (understandably) didn't go over too well. Somewhere along the line Rusty > posted a minimal alternative version which directly used a virtio request > to retrieve the data from qemu which is arguably the right way to do the > job.
*argh* That sounds like politics. > That said we still had a dispute over what interface would be used to > pass the S/N back to the guest: a new interface or reuse of an existing > interface (eg: ATA IDENTIFY). That's where things fizzled when we > couldn't immediately resolve the issue. So publishing the S/N in > /sys would seem to side step this snag. Re-using an existing interface would probable make it easier for non-Linux OSses to also take advantage of this, since their ATA driver is already there. > I could have swore I sent out a guest-driver-app-interface-less > version of the patch using virtio to pass the S/N but didn't find it in > the archives. I did however locate it and can bring it forward as a > reference for the above if interest exists. If it brings the issue forward and gives me hope to be able to do what I want to do in a reasonable time frame, why not. Does qemu have an issue tracker where a wishlist issue could be filed to have this tracked? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190
