@@ -1638,93 +1638,6 @@ config ILLEGAL_POINTER_VALUE
default 0 if X86_32
default 0xdead000000000000 if X86_64
-source "mm/Kconfig"
-
-config X86_PMEM_LEGACY_DEVICE
- bool
-
-config X86_PMEM_LEGACY
- tristate "Support non-standard NVDIMMs and ADR protected memory"
- depends on PHYS_ADDR_T_64BIT
- depends on BLK_DEV
- select X86_PMEM_LEGACY_DEVICE
- select LIBNVDIMM
- help
- Treat memory marked using the non-standard e820 type of 12 as used
- by the Intel Sandy Bridge-EP reference BIOS as protected memory.
- The kernel will offer these regions to the 'pmem' driver so
- they can be used for persistent storage.
-
- Say Y if unsure.
-
-config HIGHPTE
- bool "Allocate 3rd-level pagetables from highmem"
- depends on HIGHMEM
- ---help---
- The VM uses one page table entry for each page of physical memory.
- For systems with a lot of RAM, this can be wasteful of precious
- low memory. Setting this option will put user-space page table
- entries in high memory.
-
-config X86_CHECK_BIOS_CORRUPTION
- bool "Check for low memory corruption"
- ---help---
- Periodically check for memory corruption in low memory, which
- is suspected to be caused by BIOS. Even when enabled in the
- configuration, it is disabled at runtime. Enable it by
- setting "memory_corruption_check=1" on the kernel command
- line. By default it scans the low 64k of memory every 60
- seconds; see the memory_corruption_check_size and
- memory_corruption_check_period parameters in
- Documentation/admin-guide/kernel-parameters.rst to adjust this.
-
- When enabled with the default parameters, this option has
- almost no overhead, as it reserves a relatively small amount
- of memory and scans it infrequently. It both detects corruption
- and prevents it from affecting the running system.
-
- It is, however, intended as a diagnostic tool; if repeatable
- BIOS-originated corruption always affects the same memory,
- you can use memmap= to prevent the kernel from using that
- memory.
-
-config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
- bool "Set the default setting of memory_corruption_check"
- depends on X86_CHECK_BIOS_CORRUPTION
- default y
- ---help---
- Set whether the default state of memory_corruption_check is
- on or off.
-
-config X86_RESERVE_LOW
- int "Amount of low memory, in kilobytes, to reserve for the BIOS"
- default 64
- range 4 640
- ---help---
- Specify the amount of low memory to reserve for the BIOS.
-
- The first page contains BIOS data structures that the kernel
- must not use, so that page must always be reserved.
-
- By default we reserve the first 64K of physical RAM, as a
- number of BIOSes are known to corrupt that memory range
- during events such as suspend/resume or monitor cable
- insertion, so it must not be used by the kernel.
-
- You can set this to 4 if you are absolutely sure that you
- trust the BIOS to get all its memory reservations and usages
- right. If you know your BIOS have problems beyond the
- default 64K area, you can set this to 640 to avoid using the
- entire low memory range.
-
- If you have doubts about the BIOS (e.g. suspend/resume does
- not work or there's kernel crashes after certain hardware
- hotplug events) then you might want to enable
- X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check
- typical corruption patterns.
-
- Leave this to the default value of 64 if you are unsure.
-
config MATH_EMULATION
bool
depends on MODIFY_LDT_SYSCALL
@@ -2392,7 +2305,98 @@ config MODIFY_LDT_SYSCALL
source "kernel/livepatch/Kconfig"
-endmenu
+endmenu # Processor type and features
+
+menu "Memory Management options"
+
+source "mm/Kconfig"
+
+config X86_PMEM_LEGACY_DEVICE
+ bool
+
+config X86_PMEM_LEGACY
+ tristate "Support non-standard NVDIMMs and ADR protected memory"
+ depends on PHYS_ADDR_T_64BIT
+ depends on BLK_DEV
+ select X86_PMEM_LEGACY_DEVICE
+ select LIBNVDIMM
+ help
+ Treat memory marked using the non-standard e820 type of 12 as used
+ by the Intel Sandy Bridge-EP reference BIOS as protected memory.
+ The kernel will offer these regions to the 'pmem' driver so
+ they can be used for persistent storage.
+
+ Say Y if unsure.
+
+config HIGHPTE
+ bool "Allocate 3rd-level pagetables from highmem"
+ depends on HIGHMEM
+ ---help---
+ The VM uses one page table entry for each page of physical memory.
+ For systems with a lot of RAM, this can be wasteful of precious
+ low memory. Setting this option will put user-space page table
+ entries in high memory.
+
+config X86_CHECK_BIOS_CORRUPTION
+ bool "Check for low memory corruption"
+ ---help---
+ Periodically check for memory corruption in low memory, which
+ is suspected to be caused by BIOS. Even when enabled in the
+ configuration, it is disabled at runtime. Enable it by
+ setting "memory_corruption_check=1" on the kernel command
+ line. By default it scans the low 64k of memory every 60
+ seconds; see the memory_corruption_check_size and
+ memory_corruption_check_period parameters in
+ Documentation/admin-guide/kernel-parameters.rst to adjust this.
+
+ When enabled with the default parameters, this option has
+ almost no overhead, as it reserves a relatively small amount
+ of memory and scans it infrequently. It both detects corruption
+ and prevents it from affecting the running system.
+
+ It is, however, intended as a diagnostic tool; if repeatable
+ BIOS-originated corruption always affects the same memory,
+ you can use memmap= to prevent the kernel from using that
+ memory.
+
+config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
+ bool "Set the default setting of memory_corruption_check"
+ depends on X86_CHECK_BIOS_CORRUPTION
+ default y
+ ---help---
+ Set whether the default state of memory_corruption_check is
+ on or off.
+
+config X86_RESERVE_LOW
+ int "Amount of low memory, in kilobytes, to reserve for the BIOS"
+ default 64
+ range 4 640
+ ---help---
+ Specify the amount of low memory to reserve for the BIOS.
+
+ The first page contains BIOS data structures that the kernel
+ must not use, so that page must always be reserved.
+
+ By default we reserve the first 64K of physical RAM, as a
+ number of BIOSes are known to corrupt that memory range
+ during events such as suspend/resume or monitor cable
+ insertion, so it must not be used by the kernel.
+
+ You can set this to 4 if you are absolutely sure that you
+ trust the BIOS to get all its memory reservations and usages
+ right. If you know your BIOS have problems beyond the
+ default 64K area, you can set this to 640 to avoid using the
+ entire low memory range.
+
+ If you have doubts about the BIOS (e.g. suspend/resume does
+ not work or there's kernel crashes after certain hardware
+ hotplug events) then you might want to enable
+ X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check
+ typical corruption patterns.
+
+ Leave this to the default value of 64 if you are unsure.
+
+endmenu # MM options
config ARCH_HAS_ADD_PAGES
def_bool y
@@ -2566,7 +2570,7 @@ source "drivers/cpuidle/Kconfig"
source "drivers/idle/Kconfig"
-endmenu
+endmenu # Power management and ACPI options
menu "Bus options (PCI etc.)"
@@ -2862,7 +2866,7 @@ config X86_SYSFB
If unsure, say Y.
-endmenu
+endmenu # Bus options
menu "Executable file formats / Emulations"
@@ -2919,7 +2923,7 @@ config SYSVIPC_COMPAT
depends on SYSVIPC
endif
-endmenu
+endmenu # Executable file formats
config HAVE_ATOMIC_IOMAP