All of the changes to FreeBSD that have not already been committed to the tree are freely available at the following URL:
Specifically, there are three patches of interest in that directory. The first two patches are for the backport of ACPI to 4.7-RELEASE and 4.8-RELEASE and are contained in the files acpi_4.7.patch and acpi_4.8.patch, respectively. In addition to those patches, the following files and directories must be checked out from the 5.x branch on top of an appropriate kernel source tree:
The other patch is in the file sio_shareirq.patch and includes the changes to fix the sio driver to share interrupts with other PCI devices.
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