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  1. 14 Feb, 2015 1 commit
    • Andrey Ryabinin's avatar
      mm: vmalloc: pass additional vm_flags to __vmalloc_node_range() · cb9e3c29
      Andrey Ryabinin authored
      For instrumenting global variables KASan will shadow memory backing memory
      for modules.  So on module loading we will need to allocate memory for
      shadow and map it at address in shadow that corresponds to the address
      allocated in module_alloc().
      
      __vmalloc_node_range() could be used for this purpose, except it puts a
      guard hole after allocated area.  Guard hole in shadow memory should be a
      problem because at some future point we might need to have a shadow memory
      at address occupied by guard hole.  So we could fail to allocate shadow
      for module_alloc().
      
      Now we have VM_NO_GUARD flag disabling guard page, so we need to pass into
      __vmalloc_node_range().  Add new parameter 'vm_flags' to
      __vmalloc_node_range() function.
      Signed-off-by: default avatarAndrey Ryabinin <a.ryabinin@samsung.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Konstantin Serebryany <kcc@google.com>
      Cc: Dmitry Chernenkov <dmitryc@google.com>
      Signed-off-by: default avatarAndrey Konovalov <adech.fo@gmail.com>
      Cc: Yuri Gribov <tetra2005@gmail.com>
      Cc: Konstantin Khlebnikov <koct9i@gmail.com>
      Cc: Sasha Levin <sasha.levin@oracle.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      cb9e3c29
  2. 29 Oct, 2013 1 commit
  3. 01 Feb, 2013 1 commit
  4. 28 Sep, 2012 1 commit
    • Ralf Baechle's avatar
      MIPS: Fix module.c build for 32 bit · 6ede8123
      Ralf Baechle authored
      Fixes build failure introduced by "Make most arch asm/module.h files use
      asm-generic/module.h" by moving all the RELA processing code to a
      separate file to be used only for RELA processing on 64-bit kernels.
      
        CC      arch/mips/kernel/module.o
      arch/mips/kernel/module.c:250:14: error: 'reloc_handlers_rela' defined but not
      used [-Werror=unused-variable]
      cc1: all warnings being treated as errors
      
      make[6]: *** [arch/mips/kernel/module.o] Error 1
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
      6ede8123
  5. 17 Aug, 2012 3 commits
  6. 31 Oct, 2011 1 commit
  7. 24 Jul, 2011 1 commit
  8. 18 Jan, 2011 1 commit
  9. 14 Jan, 2011 1 commit
    • David Rientjes's avatar
      mm: unify module_alloc code for vmalloc · d0a21265
      David Rientjes authored
      Four architectures (arm, mips, sparc, x86) use __vmalloc_area() for
      module_init().  Much of the code is duplicated and can be generalized in a
      globally accessible function, __vmalloc_node_range().
      
      __vmalloc_node() now calls into __vmalloc_node_range() with a range of
      [VMALLOC_START, VMALLOC_END) for functionally equivalent behavior.
      
      Each architecture may then use __vmalloc_node_range() directly to remove
      the duplication of code.
      Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d0a21265
  10. 03 Aug, 2009 2 commits
  11. 12 Jun, 2009 1 commit
  12. 24 Jul, 2008 1 commit
    • Andrea Righi's avatar
      PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures · 27ac792c
      Andrea Righi authored
      On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit
      boundary. For example:
      
      	u64 val = PAGE_ALIGN(size);
      
      always returns a value < 4GB even if size is greater than 4GB.
      
      The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for
      example):
      
      #define PAGE_SHIFT      12
      #define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
      #define PAGE_MASK       (~(PAGE_SIZE-1))
      ...
      #define PAGE_ALIGN(addr)       (((addr)+PAGE_SIZE-1)&PAGE_MASK)
      
      The "~" is performed on a 32-bit value, so everything in "and" with
      PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary.
      Using the ALIGN() macro seems to be the right way, because it uses
      typeof(addr) for the mask.
      
      Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in
      include/linux/mm.h.
      
      See also lkml discussion: http://lkml.org/lkml/2008/6/11/237
      
      [akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c]
      [akpm@linux-foundation.org: fix v850]
      [akpm@linux-foundation.org: fix powerpc]
      [akpm@linux-foundation.org: fix arm]
      [akpm@linux-foundation.org: fix mips]
      [akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c]
      [akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c]
      [akpm@linux-foundation.org: fix powerpc]
      Signed-off-by: default avatarAndrea Righi <righi.andrea@gmail.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      27ac792c
  13. 19 Oct, 2007 1 commit
  14. 30 Nov, 2006 1 commit
    • Atsushi Nemoto's avatar
      [MIPS] Load modules to CKSEG0 if CONFIG_BUILD_ELF64=n · 656be92f
      Atsushi Nemoto authored
      This is a patch to load 64-bit modules to CKSEG0 so that can be
      compiled with -msym32 option.  This makes each module ~10% smaller.
      
      * introduce MODULE_START and MODULE_END
      * custom module_alloc()
      * PGD for modules
      * change XTLB refill handler synthesizer
      * enable -msym32 for modules again
        (revert ca78b1a5c6a6e70e052d3ea253828e49b5d07c8a)
      
      New XTLB refill handler looks like this:
      
      80000080 dmfc0   k0,C0_BADVADDR
      80000084 bltz    k0,800000e4			# goto l_module_alloc
      80000088 lui     k1,0x8046			# %high(pgd_current)
      8000008c ld      k1,24600(k1)			# %low(pgd_current)
      80000090 dsrl    k0,k0,0x1b			# l_vmalloc_done:
      80000094 andi    k0,k0,0x1ff8
      80000098 daddu   k1,k1,k0
      8000009c dmfc0   k0,C0_BADVADDR
      800000a0 ld      k1,0(k1)
      800000a4 dsrl    k0,k0,0x12
      800000a8 andi    k0,k0,0xff8
      800000ac daddu   k1,k1,k0
      800000b0 dmfc0   k0,C0_XCONTEXT
      800000b4 ld      k1,0(k1)
      800000b8 andi    k0,k0,0xff0
      800000bc daddu   k1,k1,k0
      800000c0 ld      k0,0(k1)
      800000c4 ld      k1,8(k1)
      800000c8 dsrl    k0,k0,0x6
      800000cc mtc0    k0,C0_ENTRYLO0
      800000d0 dsrl    k1,k1,0x6
      800000d4 mtc0    k1,C0_ENTRYL01
      800000d8 nop
      800000dc tlbwr
      800000e0 eret
      800000e4 dsll    k1,k0,0x2			# l_module_alloc:
      800000e8 bgez    k1,80000008			# goto l_vmalloc
      800000ec lui     k1,0xc000
      800000f0 dsubu   k0,k0,k1
      800000f4 lui     k1,0x8046			# %high(module_pg_dir)
      800000f8 beq     zero,zero,80000000
      800000fc nop
      80000000 beq     zero,zero,80000090		# goto l_vmalloc_done
      80000004 daddiu  k1,k1,0x4000
      80000008 dsll32  k1,k1,0x0			# l_vmalloc:
      8000000c dsubu   k0,k0,k1
      80000010 beq     zero,zero,80000090		# goto l_vmalloc_done
      80000014 lui     k1,0x8046			# %high(swapper_pg_dir)
      Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      656be92f
  15. 05 Jun, 2006 1 commit
  16. 29 Oct, 2005 1 commit
  17. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4