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authorMike Rapoport (IBM) <[email protected]>2023-03-24 08:22:21 +0300
committerAndrew Morton <[email protected]>2023-04-18 16:29:44 -0700
commit34affcd7577a232803f729d1870ba475f294e4ea (patch)
tree5adb54d8fd2a99be3388fd8d3c42ded8080e62d5
parent8c907785b8cc6dff2b9dda52e499715b0c64f377 (diff)
arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER
It is not a good idea to change fundamental parameters of core memory management. Having predefined ranges suggests that the values within those ranges are sensible, but one has to *really* understand implications of changing MAX_ORDER before actually amending it and ranges don't help here. Drop ranges in definition of ARCH_FORCE_MAX_ORDER and make its prompt visible only if EXPERT=y Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport (IBM) <[email protected]> Reviewed-by: Zi Yan <[email protected]> Reviewed-by: Kefeng Wang <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: David Miller <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guo Ren <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Rich Felker <[email protected]> Cc: "Russell King (Oracle)" <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yoshinori Sato <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
-rw-r--r--arch/arm64/Kconfig4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index e60baf7859d1..7324032af859 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1487,11 +1487,9 @@ config XEN
# 16K | 27 | 14 | 13 | 11 |
# 64K | 29 | 16 | 13 | 13 |
config ARCH_FORCE_MAX_ORDER
- int "Maximum zone order" if ARM64_4K_PAGES || ARM64_16K_PAGES
+ int "Maximum zone order" if EXPERT && (ARM64_4K_PAGES || ARM64_16K_PAGES)
default "13" if ARM64_64K_PAGES
- range 11 13 if ARM64_16K_PAGES
default "11" if ARM64_16K_PAGES
- range 10 15 if ARM64_4K_PAGES
default "10"
help
The kernel memory allocator divides physically contiguous memory