On Thu, 16 Oct 2008 08:26:44 -0500, John McKown wrote: > > Also, z/VM still makes VMWare look sick and immature. > Understood. But is this because z/VM does a superior job of providing virtual images of the underlying hardware, or because z/VM provides images of an architecture superior to that hardware. z/VM becomes something like another layer of microcode.
I glanced at Sine Nomine's page about OpenSolaris for Z. There's a prominent restriction that it runs only under z/VM, not in an LPAR. So it exploits a CP feature. An easy conjecture, with no evidence, is that it uses CP Block DASD I/O to bypass the complexities of CKD channel programs. Then, is it fairer to compare VMWare to z/VM or to PR/SM? Is OpenSolaris for z eligible for IFL? Thinking about the recurrent chatter about FBA, might something akin to CP Block I/O be moved into PR/SM to provide FBA emulation or other device type imaging? --gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
