Michael S. Tsirkin wrote: > On Thu, Jun 25, 2009 at 10:22:29AM -0400, Gregory Haskins wrote: > >> Gregory Haskins wrote: >> >>> Today kvm_io_bus_regsiter_dev() returns void and will internally BUG_ON if it >>> fails. We want to create dynamic MMIO/PIO entries driven from userspace later >>> in the series, so we need to enhance the code to be more robust with the >>> following changes: >>> >>> 1) Add a return value to the registration function >>> 2) Fix up all the callsites to check the return code, handle any >>> failures, and percolate the error up to the caller. >>> 3) Add an unregister function that collapses holes in the array >>> > > Does not unregister need rcu bus fixes to work? > > Not without users ;) But, hmm. Perhaps I should re-split out the return value stuff so it can go independent of the unregister. Gah, this io_bus is a nightmare. -Greg
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