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| author | Arnd Bergmann <arnd@arndb.de> | 2024-02-24 01:18:37 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2024-03-06 21:28:26 +0300 |
| commit | ba89f9c8ccbad3998cbfbf4012eff182f77b42aa (patch) | |
| tree | 8ad229ae23cea709b4f7fb8eec697d1c9480d15c /arch/sh/mm | |
| parent | 3391538f08511dae86382003ff9216026762b3a9 (diff) | |
| download | linux-ba89f9c8ccbad3998cbfbf4012eff182f77b42aa.tar.xz | |
arch: consolidate existing CONFIG_PAGE_SIZE_*KB definitions
These four architectures define the same Kconfig symbols for configuring
the page size. Move the logic into a common place where it can be shared
with all other architectures.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/Kconfig | 42 |
1 files changed, 12 insertions, 30 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 455311d9a5e9..f32a1963ff0c 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -4,6 +4,9 @@ menu "Memory management options" config MMU bool "Support for memory management hardware" depends on !CPU_SH2 + select HAVE_PAGE_SIZE_4KB + select HAVE_PAGE_SIZE_8KB if X2TLB + select HAVE_PAGE_SIZE_64KB if CPU_SH4 default y help Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to @@ -13,6 +16,15 @@ config MMU turning this off will boot the kernel on these machines with the MMU implicitly switched off. +config NOMMU + def_bool !MMU + select HAVE_PAGE_SIZE_4KB + select HAVE_PAGE_SIZE_8KB + select HAVE_PAGE_SIZE_16KB + select HAVE_PAGE_SIZE_64KB + help + On MMU-less systems, any of these page sizes can be selected + config PAGE_OFFSET hex default "0x80000000" if MMU @@ -148,36 +160,6 @@ config HAVE_SRAM_POOL select GENERIC_ALLOCATOR choice - prompt "Kernel page size" - default PAGE_SIZE_4KB - -config PAGE_SIZE_4KB - bool "4kB" - help - This is the default page size used by all SuperH CPUs. - -config PAGE_SIZE_8KB - bool "8kB" - depends on !MMU || X2TLB - help - This enables 8kB pages as supported by SH-X2 and later MMUs. - -config PAGE_SIZE_16KB - bool "16kB" - depends on !MMU - help - This enables 16kB pages on MMU-less SH systems. - -config PAGE_SIZE_64KB - bool "64kB" - depends on !MMU || CPU_SH4 - help - This enables support for 64kB pages, possible on all SH-4 - CPUs and later. - -endchoice - -choice prompt "HugeTLB page size" depends on HUGETLB_PAGE default HUGETLB_PAGE_SIZE_1MB if PAGE_SIZE_64KB |