* ACPI interrupt routing implemented and enabled by default
* ACPI - tons of work has gone into our ACPI support.
* APIC_IO now acts as a default and can be changed in /boot/loader.conf
- * Overhaul LWKT scheduler for MP performance.
+ * Overhaul LWKT and USCHED schedulers for MP performance when many cpus are present.
* Significant HAMMER bug fixes and performance improvements.
* HAMMER enhancements to allow swapcache to more easily cache file data via vfs.hammer.double_buffer mode.
* HAMMER double_buffer mode's strategy code is now asynchronous.
* LWKT thread migration code redone.
* The FAIRQ altq has been significantly enhanced and now supports weighted expansion of bandwidths up to the interface bandwidth.
* Lots of MP-related bug fixes to the network stack.
+ * Use MONITOR/MWAIT in the idle thread as an intermediate step prior to ACPI halt.
> ### Hardware changes (non-networking)
* mfi(4) RAID driver and mfiutil(8) configuration tool added.
* tws(4) added, a driver for the LSI 3ware 9750 series SATA/SAS RAID controllers.
* aesni(4) bug fixes
* kqueue added to ulpt to improve CUPS support.
+ * AHCI driver enhanced to better support semi-broken chipsets which do not properly mask transient phy events during training.
+ * AHCI driver hotplug support improved.
> ### Hardware changes (networking)
* Wireless cards utilizing the following drivers are supported in this release: ath, iwi, iwn, ral, wi, wpi. (update me)
> ### x86_64-specific changes
* 64-bit systems now can support up to 63 CPUs and 512G of RAM
* Much faster early-kernel-boot memory test
+* More generous kernel resource limits
> ### Removals
-* this
-* that
+* TBD
> ### Contributed Software
* Shipping with pkgsrc-2011Q1 built packages.