2 files changed, 35 insertions, 12 deletions

diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu
index 11a24d54f27b..0e2adadf5905 100644
--- a/arch/i386/Kconfig.cpu
+++ b/arch/i386/Kconfig.cpu
@@ -109,16 +109,42 @@ config MCORE2
         help
           Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx)
           CPUs. You can distinguish newer from older Xeons by the CPU family
-          in /proc/cpuinfo. Newer ones have 6.
+          in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo)
 
 config MPENTIUM4
         bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
         help
           Select this for Intel Pentium 4 chips.  This includes the
-          Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
-          (not Pentium M) chips.  This option enables compile flags
-          optimized for the chip, uses the correct cache shift, and
-          applies any applicable Pentium III optimizations.
+          Pentium 4, Pentium D, P4-based Celeron and Xeon, and
+          Pentium-4 M (not Pentium M) chips.  This option enables compile
+          flags optimized for the chip, uses the correct cache line size, and
+          applies any applicable optimizations.
+
+          CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 )
+
+          Select this for:
+            Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename:
+                -Willamette
+                -Northwood
+                -Mobile Pentium 4
+                -Mobile Pentium 4 M
+                -Extreme Edition (Gallatin)
+                -Prescott
+                -Prescott 2M
+                -Cedar Mill
+                -Presler
+                -Smithfiled
+            Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename:
+                -Foster
+                -Prestonia
+                -Gallatin
+                -Nocona
+                -Irwindale
+                -Cranford
+                -Potomac
+                -Paxville
+                -Dempsey
+
 
 config MK6
         bool "K6/K6-II/K6-III"
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index d681be88ae5d..85f958c2f555 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -175,14 +175,12 @@ config MK8
 config MPSC
        bool "Intel P4 / older Netburst based Xeon"
        help
-          Optimize for Intel Pentium 4 and older Nocona/Dempsey Xeon CPUs
-          with Intel Extended Memory 64 Technology(EM64T). For details see
-          <http://www.intel.com/technology/64bitextensions/>.
+          Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
+          Xeon CPUs with Intel 64bit which is compatible with x86-64.
           Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the
           Netburst core and shouldn't use this option. You can distinguish them
           using the cpu family field
-          in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one
-          (this rule only applies to systems that support EM64T)
+          in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
 
 config MCORE2
         bool "Intel Core2 / newer Xeon"
@@ -190,8 +188,7 @@ config MCORE2
           Optimize for Intel Core2 and newer Xeons (51xx)
           You can distinguish the newer Xeons from the older ones using
           the cpu family field in /proc/cpuinfo. 15 is an older Xeon
-          (use CONFIG_MPSC then), 6 is a newer one. This rule only
-          applies to CPUs that support EM64T.
+          (use CONFIG_MPSC then), 6 is a newer one.
 
 config GENERIC_CPU
         bool "Generic-x86-64"