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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 01:13:31 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 01:13:31 +0200 |
| commit | 0bc40e549aeea2de20fc571749de9bbfc099fb34 (patch) | |
| tree | d18f3339bd383a17431fca23b6c5f3e54c93cf2f /arch/Kconfig | |
| parent | Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| parent | x86/mm: Initialize PGD cache during mm initialization (diff) | |
| download | linux-0bc40e549aeea2de20fc571749de9bbfc099fb34.tar.xz linux-0bc40e549aeea2de20fc571749de9bbfc099fb34.zip | |
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar:
"The changes in here are:
- text_poke() fixes and an extensive set of executability lockdowns,
to (hopefully) eliminate the last residual circumstances under
which we are using W|X mappings even temporarily on x86 kernels.
This required a broad range of surgery in text patching facilities,
module loading, trampoline handling and other bits.
- tweak page fault messages to be more informative and more
structured.
- remove DISCONTIGMEM support on x86-32 and make SPARSEMEM the
default.
- reduce KASLR granularity on 5-level paging kernels from 512 GB to
1 GB.
- misc other changes and updates"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
x86/mm: Initialize PGD cache during mm initialization
x86/alternatives: Add comment about module removal races
x86/kprobes: Use vmalloc special flag
x86/ftrace: Use vmalloc special flag
bpf: Use vmalloc special flag
modules: Use vmalloc special flag
mm/vmalloc: Add flag for freeing of special permsissions
mm/hibernation: Make hibernation handle unmapped pages
x86/mm/cpa: Add set_direct_map_*() functions
x86/alternatives: Remove the return value of text_poke_*()
x86/jump-label: Remove support for custom text poker
x86/modules: Avoid breaking W^X while loading modules
x86/kprobes: Set instruction page as executable
x86/ftrace: Set trampoline pages as executable
x86/kgdb: Avoid redundant comparison of patched code
x86/alternatives: Use temporary mm for text poking
x86/alternatives: Initialize temporary mm for patching
fork: Provide a function for copying init_mm
uprobes: Initialize uprobes earlier
x86/mm: Save debug registers when loading a temporary mm
...
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 3ab446bd12ef..5e43fcbad4ca 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -249,6 +249,10 @@ config ARCH_HAS_FORTIFY_SOURCE config ARCH_HAS_SET_MEMORY bool +# Select if arch has all set_direct_map_invalid/default() functions +config ARCH_HAS_SET_DIRECT_MAP + bool + # Select if arch init_task must go in the __init_task_data section config ARCH_TASK_STRUCT_ON_STACK bool |