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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-18 20:55:31 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-18 20:55:31 +0200 |
| commit | f5ce0466dc96326e07b52b8fc170c91bc234beb3 (patch) | |
| tree | 57289971b637dd82d5d551e34cda4399cbe2a7b9 /arch/arm/Kconfig | |
| parent | Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/... (diff) | |
| parent | ARM: 9071/1: uprobes: Don't hook on thumb instructions (diff) | |
| download | linux-f5ce0466dc96326e07b52b8fc170c91bc234beb3.tar.xz linux-f5ce0466dc96326e07b52b8fc170c91bc234beb3.zip | |
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
- Halve maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled
- Fix conversion for_each_membock() to for_each_mem_range()
- Fix footbridge PCI mapping
- Avoid uprobes hooking on thumb instructions
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9071/1: uprobes: Don't hook on thumb instructions
ARM: footbridge: fix PCI interrupt mapping
ARM: 9069/1: NOMMU: Fix conversion for_each_membock() to for_each_mem_range()
ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5da96f5df48f..2fae14857dcf 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1293,9 +1293,15 @@ config KASAN_SHADOW_OFFSET config NR_CPUS int "Maximum number of CPUs (2-32)" - range 2 32 + range 2 16 if DEBUG_KMAP_LOCAL + range 2 32 if !DEBUG_KMAP_LOCAL depends on SMP default "4" + help + The maximum number of CPUs that the kernel can support. + Up to 32 CPUs can be supported, or up to 16 if kmap_local() + debugging is enabled, which uses half of the per-CPU fixmap + slots as guard regions. config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" |