x86, 386 removal: Remove CONFIG_M386 from Kconfig
Remove the CONFIG_M386 symbol from Kconfig so that it cannot be
selected.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1354132230-21854-2-git-send-email-hpa@linux.intel.com
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index f3b86d0..36a07eb 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -4,23 +4,24 @@
default M686 if X86_32
default GENERIC_CPU if X86_64
-config M386
- bool "386"
- depends on X86_32 && !UML
+config M486
+ bool "486"
+ depends on X86_32
---help---
- This is the processor type of your CPU. This information is used for
- optimizing purposes. In order to compile a kernel that can run on
- all x86 CPU types (albeit not optimally fast), you can specify
- "386" here.
+ This is the processor type of your CPU. This information is
+ used for optimizing purposes. In order to compile a kernel
+ that can run on all supported x86 CPU types (albeit not
+ optimally fast), you can specify "486" here.
+
+ Note that the 386 is no longer supported, this includes
+ AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2,
+ and UMC 486SX-S.
The kernel will not necessarily run on earlier architectures than
the one you have chosen, e.g. a Pentium optimized kernel will run on
a PPro, but not necessarily on a i486.
Here are the settings recommended for greatest speed:
- - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
- 486DLC/DLC2, and UMC 486SX-S. Only "386" kernels will run on a 386
- class machine.
- "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
- "586" for generic Pentium CPUs lacking the TSC
@@ -43,16 +44,7 @@
- "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above).
- "VIA C7" for VIA C7.
- If you don't know what to do, choose "386".
-
-config M486
- bool "486"
- depends on X86_32
- ---help---
- Select this for a 486 series processor, either Intel or one of the
- compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
- DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
- U5S.
+ If you don't know what to do, choose "486".
config M586
bool "586/K5/5x86/6x86/6x86MX"
@@ -307,22 +299,20 @@
config X86_CMPXCHG
def_bool y
- depends on X86_64 || (X86_32 && !M386)
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || MPSC
default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
- default "4" if MELAN || M486 || M386 || MGEODEGX1
+ default "4" if MELAN || M486 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
config X86_XADD
def_bool y
- depends on !M386
config X86_PPRO_FENCE
bool "PentiumPro memory ordering errata workaround"
- depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
+ depends on M686 || M586MMX || M586TSC || M586 || M486 || MGEODEGX1
---help---
Old PentiumPro multiprocessor systems had errata that could cause
memory operations to violate the x86 ordering standard in rare cases.
@@ -335,27 +325,26 @@
config X86_F00F_BUG
def_bool y
- depends on M586MMX || M586TSC || M586 || M486 || M386
+ depends on M586MMX || M586TSC || M586 || M486
config X86_INVD_BUG
def_bool y
- depends on M486 || M386
+ depends on M486
config X86_WP_WORKS_OK
def_bool y
- depends on !M386
config X86_INVLPG
def_bool y
- depends on X86_32 && !M386
+ depends on X86_32
config X86_BSWAP
def_bool y
- depends on X86_32 && !M386
+ depends on X86_32
config X86_POPAD_OK
def_bool y
- depends on X86_32 && !M386
+ depends on X86_32
config X86_ALIGNMENT_16
def_bool y
@@ -412,12 +401,11 @@
default "64" if X86_64
default "6" if X86_32 && X86_P6_NOP
default "5" if X86_32 && X86_CMPXCHG64
- default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK)
- default "3"
+ default "4"
config X86_DEBUGCTLMSR
def_bool y
- depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386) && !UML
+ depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486) && !UML
menuconfig PROCESSOR_SELECT
bool "Supported processor vendors" if EXPERT
@@ -441,7 +429,7 @@
config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
- depends on M386 || M486 || M586 || M586TSC || M586MMX || (EXPERT && !64BIT)
+ depends on M486 || M586 || M586TSC || M586MMX || (EXPERT && !64BIT)
---help---
This enables detection, tunings and quirks for Cyrix processors
@@ -495,7 +483,7 @@
config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
- depends on M386 || M486 || (EXPERT && !64BIT)
+ depends on M486 || (EXPERT && !64BIT)
---help---
This enables detection, tunings and quirks for UMC processors