1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # !! 2
3 config LIGHTWEIGHT_SPINLOCK_CHECK !! 3 config EARLY_PRINTK
4 bool "Enable lightweight spinlock chec !! 4 bool
5 depends on DEBUG_KERNEL && SMP && !DEB !! 5 depends on ALPHA_GENERIC || ALPHA_SRM
6 default y 6 default y
7 help !! 7
8 Add checks with low performance impa !! 8 config ALPHA_LEGACY_START_ADDRESS
9 to catch memory overwrites at runtim !! 9 bool "Legacy kernel start address"
10 spinlock debugging you should choose !! 10 depends on ALPHA_GENERIC
11 which will detect unitialized spinlo <<
12 If unsure say Y here. <<
13 <<
14 config TLB_PTLOCK <<
15 bool "Use page table locks in TLB faul <<
16 depends on DEBUG_KERNEL && SMP <<
17 default n 11 default n
18 help !! 12 ---help---
19 Select this option to enable page ta !! 13 The 2.4 kernel changed the kernel start address from 0x310000
20 fault handler. This ensures that pag !! 14 to 0x810000 to make room for the Wildfire's larger SRM console.
21 updated consistently on SMP machines !! 15 Recent consoles on Titan and Marvel machines also require the
22 loss in performance. !! 16 extra room.
>> 17
>> 18 If you're using aboot 0.7 or later, the bootloader will examine the
>> 19 ELF headers to determine where to transfer control. Unfortunately,
>> 20 most older bootloaders -- APB or MILO -- hardcoded the kernel start
>> 21 address rather than examining the ELF headers, and the result is a
>> 22 hard lockup.
23 23
>> 24 Say Y if you have a broken bootloader. Say N if you do not, or if
>> 25 you wish to run on Wildfire, Titan, or Marvel.
>> 26
>> 27 config ALPHA_LEGACY_START_ADDRESS
>> 28 bool
>> 29 depends on !ALPHA_GENERIC && !ALPHA_TITAN && !ALPHA_MARVEL && !ALPHA_WILDFIRE
>> 30 default y
>> 31
>> 32 config MATHEMU
>> 33 tristate "Kernel FP software completion" if DEBUG_KERNEL && !SMP
>> 34 default y if !DEBUG_KERNEL || SMP
>> 35 help
>> 36 This option is required for IEEE compliant floating point arithmetic
>> 37 on the Alpha. The only time you would ever not say Y is to say M in
>> 38 order to debug the code. Say Y unless you know what you are doing.
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