projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | menu "Kernel hacking" |
| 3 | ||
| 4 | source "lib/Kconfig.debug" | |
| 5 | ||
| 6 | choice | |
| 7 | prompt "Physical memory granularity" | |
| 8 | default IA64_GRANULE_64MB | |
| 9 | ||
| 10 | config IA64_GRANULE_16MB | |
| 11 | bool "16MB" | |
| 12 | help | |
| 13 | IA-64 identity-mapped regions use a large page size called "granules". | |
| 14 | ||
| 15 | Select "16MB" for a small granule size. | |
| 16 | Select "64MB" for a large granule size. This is the current default. | |
| 17 | ||
| 18 | config IA64_GRANULE_64MB | |
| 19 | bool "64MB" | |
| 20 | depends on !(IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_SGI_SN2) | |
| 21 | ||
| 22 | endchoice | |
| 23 | ||
| 24 | config IA64_PRINT_HAZARDS | |
| 25 | bool "Print possible IA-64 dependency violations to console" | |
| 26 | depends on DEBUG_KERNEL | |
| 27 | help | |
| 28 | Selecting this option prints more information for Illegal Dependency | |
| 29 | Faults, that is, for Read-after-Write (RAW), Write-after-Write (WAW), | |
| 30 | or Write-after-Read (WAR) violations. This option is ignored if you | |
| 31 | are compiling for an Itanium A step processor | |
| 32 | (CONFIG_ITANIUM_ASTEP_SPECIFIC). If you're unsure, select Y. | |
| 33 | ||
| 34 | config DISABLE_VHPT | |
| 35 | bool "Disable VHPT" | |
| 36 | depends on DEBUG_KERNEL | |
| 37 | help | |
| 38 | The Virtual Hash Page Table (VHPT) enhances virtual address | |
| 39 | translation performance. Normally you want the VHPT active but you | |
| 40 | can select this option to disable the VHPT for debugging. If you're | |
| 41 | unsure, answer N. | |
| 42 | ||
| 43 | config IA64_DEBUG_CMPXCHG | |
| 44 | bool "Turn on compare-and-exchange bug checking (slow!)" | |
| 45 | depends on DEBUG_KERNEL | |
| 46 | help | |
| 47 | Selecting this option turns on bug checking for the IA-64 | |
| 48 | compare-and-exchange instructions. This is slow! Itaniums | |
| 49 | from step B3 or later don't have this problem. If you're unsure, | |
| 50 | select N. | |
| 51 | ||
| 52 | config IA64_DEBUG_IRQ | |
| 53 | bool "Turn on irq debug checks (slow!)" | |
| 54 | depends on DEBUG_KERNEL | |
| 55 | help | |
| 56 | Selecting this option turns on bug checking for the IA-64 irq_save | |
| 57 | and restore instructions. It's useful for tracking down spinlock | |
| 58 | problems, but slow! If you're unsure, select N. | |
| 59 | ||
| 1da177e4 | 60 | endmenu |