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-rw-r--r--arch/x86/Kconfig75
1 files changed, 60 insertions, 15 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ed92864d1325..97f0d2b6dc0c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -29,6 +29,7 @@ config X86
select HAVE_FTRACE
select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
select HAVE_ARCH_KGDB if !X86_VOYAGER
+ select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_DMA_COHERENT if X86_32
select HAVE_EFFICIENT_UNALIGNED_ACCESS
@@ -1020,7 +1021,7 @@ config HAVE_ARCH_ALLOC_REMAP
config ARCH_FLATMEM_ENABLE
def_bool y
- depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC && !NUMA
+ depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && !NUMA
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
@@ -1036,7 +1037,7 @@ config ARCH_SPARSEMEM_DEFAULT
config ARCH_SPARSEMEM_ENABLE
def_bool y
- depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC)
+ depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC) || X86_GENERICARCH
select SPARSEMEM_STATIC if X86_32
select SPARSEMEM_VMEMMAP_ENABLE if X86_64
@@ -1117,10 +1118,10 @@ config MTRR
You can safely say Y even if your machine doesn't have MTRRs, you'll
just add about 9 KB to your kernel.
- See <file:Documentation/mtrr.txt> for more information.
+ See <file:Documentation/x86/mtrr.txt> for more information.
config MTRR_SANITIZER
- bool
+ def_bool y
prompt "MTRR cleanup support"
depends on MTRR
help
@@ -1131,7 +1132,7 @@ config MTRR_SANITIZER
The largest mtrr entry size for a continous block can be set with
mtrr_chunk_size.
- If unsure, say N.
+ If unsure, say Y.
config MTRR_SANITIZER_ENABLE_DEFAULT
int "MTRR cleanup enable value (0-1)"
@@ -1191,7 +1192,6 @@ config IRQBALANCE
config SECCOMP
def_bool y
prompt "Enable seccomp to safely compute untrusted bytecode"
- depends on PROC_FS
help
This kernel feature is useful for number crunching applications
that may need to compute untrusted bytecode during their
@@ -1199,7 +1199,7 @@ config SECCOMP
the process as file descriptors supporting the read/write
syscalls, it's possible to isolate those applications in
their own address space using seccomp. Once seccomp is
- enabled via /proc/<pid>/seccomp, it cannot be disabled
+ enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
@@ -1356,14 +1356,14 @@ config PHYSICAL_ALIGN
Don't change this unless you know what you are doing.
config HOTPLUG_CPU
- bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
- depends on SMP && HOTPLUG && EXPERIMENTAL && !X86_VOYAGER
+ bool "Support for hot-pluggable CPUs"
+ depends on SMP && HOTPLUG && !X86_VOYAGER
---help---
- Say Y here to experiment with turning CPUs off and on, and to
- enable suspend on SMP systems. CPUs can be controlled through
- /sys/devices/system/cpu.
- Say N if you want to disable CPU hotplug and don't need to
- suspend.
+ Say Y here to allow turning CPUs off and on. CPUs can be
+ controlled through /sys/devices/system/cpu.
+ ( Note: power management support will enable this option
+ automatically on SMP systems. )
+ Say N if you want to disable CPU hotplug.
config COMPAT_VDSO
def_bool y
@@ -1378,6 +1378,51 @@ config COMPAT_VDSO
If unsure, say Y.
+config CMDLINE_BOOL
+ bool "Built-in kernel command line"
+ default n
+ help
+ Allow for specifying boot arguments to the kernel at
+ build time. On some systems (e.g. embedded ones), it is
+ necessary or convenient to provide some or all of the
+ kernel boot arguments with the kernel itself (that is,
+ to not rely on the boot loader to provide them.)
+
+ To compile command line arguments into the kernel,
+ set this option to 'Y', then fill in the
+ the boot arguments in CONFIG_CMDLINE.
+
+ Systems with fully functional boot loaders (i.e. non-embedded)
+ should leave this option set to 'N'.
+
+config CMDLINE
+ string "Built-in kernel command string"
+ depends on CMDLINE_BOOL
+ default ""
+ help
+ Enter arguments here that should be compiled into the kernel
+ image and used at boot time. If the boot loader provides a
+ command line at boot time, it is appended to this string to
+ form the full kernel command line, when the system boots.
+
+ However, you can use the CONFIG_CMDLINE_OVERRIDE option to
+ change this behavior.
+
+ In most cases, the command line (whether built-in or provided
+ by the boot loader) should specify the device for the root
+ file system.
+
+config CMDLINE_OVERRIDE
+ bool "Built-in command line overrides boot loader arguments"
+ default n
+ depends on CMDLINE_BOOL
+ help
+ Set this option to 'Y' to have the kernel ignore the boot loader
+ command line, and use ONLY the built-in command line.
+
+ This is used to work around broken boot loaders. This should
+ be set to 'N' under normal conditions.
+
endmenu
config ARCH_ENABLE_MEMORY_HOTPLUG
@@ -1773,7 +1818,7 @@ config COMPAT_FOR_U64_ALIGNMENT
config SYSVIPC_COMPAT
def_bool y
- depends on X86_64 && COMPAT && SYSVIPC
+ depends on COMPAT && SYSVIPC
endmenu