On Mon, 4 Feb 2008 14:59:45 -0600, David Day <[EMAIL PROTECTED]> wrote:
>snip > >and can occur for other LPARs when the >hyper-visor interrupts the processor to dispatch another LPAR. > >snip > > Tom, > What interrupt does the executing TCB/SRB experience when the above >ocurrs? Just curios as to the mechanism used to switch a processor from one >LAPR to another? I don't know the mechanism that PR/SM uses to decide when to move a physical processor to another partition. Whenever there are more logical processors defined to active LPARs than there are physical processors, PR/SM must periodically remove a physical processor from one LPAR and assign it to another LPAR. AFAIK, The operating system is unaware that this has happened. PR/SM is responsible for saving the state of that logical processor and restoring it when a physical processor is reassigned to that logical processor. This is very similar conceptually to what happens with virtual processors when running under VM. -- Tom Marchant ---------------------------------------------------------------------- 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
