• Linus Torvalds's avatar
    Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0bc40e54
    Linus Torvalds authored
    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
      ...
    0bc40e54
core.c 32 KB