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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-06 16:13:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-06 16:13:31 -0700
commit0bc40e549aeea2de20fc571749de9bbfc099fb34 (patch)
treed18f3339bd383a17431fca23b6c5f3e54c93cf2f /arch/Kconfig
parente913c4a4c21cd83317fafe63bfdc9d34d2910114 (diff)
parentcaa841360134f863987f2d4f77b8dc2fbb7596f8 (diff)
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/Kconfig4
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