Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

[mv-sheeva.git] / arch / mips / Kconfig

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2d3cf3890904b81efdcd4580d5a182ad8ec57b63..4c9f402295dd3d9b11548ab47d26853761df62f1 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -13,6 +13,7 @@ config MIPS
        select HAVE_KPROBES
        select HAVE_KRETPROBES
        select RTC_LIB if !MACH_LOONGSON
+       select GENERIC_ATOMIC64 if !64BIT
 
 mainmenu "Linux/MIPS Kernel Configuration"
 
@@ -1650,8 +1651,16 @@ config MIPS_MT_SMP
        select SYS_SUPPORTS_SMP
        select SMP_UP
        help
-         This is a kernel model which is also known a VSMP or lately
-         has been marketesed into SMVP.
+         This is a kernel model which is known a VSMP but lately has been
+         marketesed into SMVP.
+         Virtual SMP uses the processor's VPEs  to implement virtual
+         processors. In currently available configuration of the 34K processor
+         this allows for a dual processor. Both processors will share the same
+         primary caches; each will obtain the half of the TLB for it's own
+         exclusive use. For a layman this model can be described as similar to
+         what Intel calls Hyperthreading.
+
+         For further information see http://www.linux-mips.org/wiki/34K#VSMP
 
 config MIPS_MT_SMTC
        bool "SMTC: Use all TCs on all VPEs for SMP"
@@ -1668,6 +1677,14 @@ config MIPS_MT_SMTC
        help
          This is a kernel model which is known a SMTC or lately has been
          marketesed into SMVP.
+         is presenting the available TC's of the core as processors to Linux.
+         On currently available 34K processors this means a Linux system will
+         see up to 5 processors. The implementation of the SMTC kernel differs
+         significantly from VSMP and cannot efficiently coexist in the same
+         kernel binary so the choice between VSMP and SMTC is a compile time
+         decision.
+
+         For further information see http://www.linux-mips.org/wiki/34K#SMTC
 
 endchoice