[PATCH v2 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER

From: Mike Rapoport
Date: Fri Mar 24 2023 - 01:23:26 EST


From: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>

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

Signed-off-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
---
arch/arm64/Kconfig | 4 +---
1 file changed, 1 insertion(+), 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
--
2.35.1