diff --git a/en_US.ISO8859-1/books/handbook/kernelconfig/chapter.sgml b/en_US.ISO8859-1/books/handbook/kernelconfig/chapter.sgml
index b9ac85d3b7..a58d6c717e 100644
--- a/en_US.ISO8859-1/books/handbook/kernelconfig/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/kernelconfig/chapter.sgml
@@ -893,19 +893,28 @@ options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
options ADAPTIVE_GIANT # Giant mutex is adaptive.
- This option causes Giant to be included in the set of mutexes
- adaptively spun on.
+ Giant is the name of a mutual exclusion mechanism (a sleep mutex)
+ that protects a large set of kernel resources. Today, this is an
+ unacceptable performance bottleneck which is actively being replaced
+ with locks that protect individual resources. The
+ ADAPTIVE_GIANT option causes Giant to be included
+ in the set of mutexes adaptively spun on. That is, when a thread
+ wants to lock the Giant mutex, but it is already locked by a thread
+ on another CPU, the first thread will keep running and wait for the
+ lock to be released. Normally, the thread would instead go back to
+ sleep and wait for its next chance to run. If you are not sure,
+ leave this in.
kernel options
SMP
- # To make an SMP kernel, the next two are needed
-options SMP # Symmetric MultiProcessor Kernel
-device apic # I/O APIC
+ device apic # I/O APIC
- The above are both required for SMP support, and can also be
- safely enabled on uniprocessor systems.
+ The apic device enables the use of the I/O APIC for interrupt
+ delivery. The apic device can be used in both UP and SMP kernels, but
+ is required for SMP kernels. Add options SMP to
+ include support for multiple processors.
device isa
@@ -1026,6 +1035,7 @@ device amr # AMI MegaRAID
device asr # DPT SmartRAID V, VI and Adaptec SCSI RAID
device ciss # Compaq Smart RAID 5*
device dpt # DPT Smartcache III, IV - See NOTES for options
+device hptmv # Highpoint RocketRAID 182x
device iir # Intel Integrated RAID
device ips # IBM (Adaptec) ServeRAID
device mly # Mylex AcceleRAID/eXtremeRAID