On Thursday 25 June 2009 2:13:46 pm John Baldwin wrote: > Author: jhb > Date: Thu Jun 25 18:13:46 2009 > New Revision: 194985 > URL: http://svn.freebsd.org/changeset/base/194985 > > Log: > - Restore the behavior of pre-allocating IDT vectors for MSI interrupts. > This is mostly important for the multiple MSI message case where the > IDT vectors for the entire group need to be allocated together. This > also restores the assumptions made by the PCI bus code that it could > invoke PCIB_MAP_MSI() once MSI vectors were allocated. > - To avoid whiplash with CPU assignments, change the way that CPUs are > assigned to interrupt sources on activation. Instead of assigning the > CPU via pic_assign_cpu() before calling enable_intr(), allow the > different interrupt source drivers to ask the MD interrupt code which > CPU to use when they allocate an IDT vector. I/O APIC interrupt pins > do this in their pic_enable_intr() routines giving the same behavior as > before. MSI sources do it when the IDT vectors are allocated during > msi_alloc() and msix_alloc(). > - Change the intr_table_lock from an sx lock to a mutex.
Incidentally, this fixes the remaining issues Robert was having with VT switch with Intel DRM drivers. It is still not possible to migrate multiple MSI interrupts, but I intend to work on that next. -- John Baldwin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
