On Thu, 2005-10-13 at 08:58 -0700, Fargusson.Alan wrote: > But it isn't a device is it? It isn't a filesystem either. > > It looks like sysfs is the best fit even if it isn't really the right > place for it. Actually a architecture specific system call might be the > right thing to do, but I suspect it would be hard to get it implemented.
It's not a device, it's not a filesystem, it is a service that lets you call a hypervisor function (z/VM AND LPAR by the way). Dependent on the diagnose code it has to do memory copies. That screams for a system call and they are not harder to implement then e.g. an ioctl. Doing the diagnose via a system call would have the benefit that you don't have to open some device first. Even better you don't need any special device node, /proc or /sys entry at all. So if we decide that we want such a beast then we can as well implement it as a system call. -- blue skies, Martin Martin Schwidefsky Linux for zSeries Development & Services IBM Deutschland Entwicklung GmbH ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
