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Andrea Righi 27ac792ca0 PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 
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: Andrea Righi <righi.andrea@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:21 -07:00
..
a.out-core.h aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUT 2008-02-08 09:22:30 -08:00
a.out.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
adb_iop.h
amigahw.h m68k/amiga/: possible cleanups 2008-07-20 17:24:39 -07:00
amigaints.h m68k/amiga/: possible cleanups 2008-07-20 17:24:39 -07:00
amigayle.h
amipcmcia.h
apollodma.h m68k: remove CVS keywords 2008-07-20 17:24:38 -07:00
apollohw.h
atafd.h
atafdreg.h
atari_joystick.h
atari_stdma.h
atari_stram.h
atarihw.h further UTF-8 fixes and name correction 2007-05-11 19:09:46 +02:00
atariints.h further UTF-8 fixes and name correction 2007-05-11 19:09:46 +02:00
atarikb.h m68k: Atari keyboard and mouse support. 2007-05-04 17:59:05 -07:00
atomic.h atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency 2007-05-08 11:15:20 -07:00
auxvec.h
bitops.h m68k: Add ext2_find_{first,next}_bit() for ext4 2008-06-12 18:05:39 -07:00
blinken.h
bootinfo.h
bug.h m68k: Make gcc aware that BUG() does not return 2008-05-18 13:28:48 -07:00
bugs.h
bvme6000hw.h
byteorder.h
cache.h
cachectl.h
cacheflush.h
checksum.h
contregs.h
cputime.h
current.h
delay.h
device.h
div64.h rename div64_64 to div64_u64 2008-05-01 08:03:58 -07:00
dma-mapping.h [PATCH] m68k dma-mapping: gfp_t annotations 2007-03-14 15:27:51 -07:00
dma.h
dsp56k.h
dvma.h PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
elf.h Cleanup asm/{elf,page,user}.h: #ifdef __KERNEL__ is no longer needed 2008-02-07 08:42:30 -08:00
emergency-restart.h
entry.h
errno.h
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fbio.h
fcntl.h
floppy.h cleanup floppy.h 2007-10-17 08:42:55 -07:00
fpu.h m68k: Allow no CPU/platform type for allnoconfig 2008-07-20 17:24:38 -07:00
futex.h
hardirq.h
hp300hw.h
hw_irq.h
hwtest.h
ide.h ide: add hwif->ack_intr hook 2007-10-20 00:32:32 +02:00
idprom.h
intersil.h
io.h m68k: Prefix ISA type with ISA_TYPE_ 2008-05-18 13:28:50 -07:00
ioctl.h
ioctls.h m68k: Enable arbitary speed tty support 2007-08-22 19:52:45 -07:00
ipcbuf.h
irq.h m68k: Allow no CPU/platform type for allnoconfig 2008-07-20 17:24:38 -07:00
irq_regs.h
Kbuild m68k: Export cachectl.h 2007-10-13 09:41:03 -07:00
kdebug.h move die notifier handling to common code 2007-05-08 11:15:04 -07:00
kmap_types.h
kvm.h kvm: provide kvm.h for all architecture: fixes headers_install 2008-04-02 15:28:18 -07:00
linkage.h
local.h
mac_asc.h
mac_baboon.h m68k/mac/: possible cleanups 2008-07-20 17:24:39 -07:00
mac_iop.h
mac_mouse.h
mac_oss.h
mac_psc.h
mac_via.h m68k/mac/: possible cleanups 2008-07-20 17:24:39 -07:00
machdep.h
machines.h m68k/sun3/: possible cleanups 2008-07-20 17:24:39 -07:00
machw.h m68k: remove old mac_esp cruft 2008-05-05 12:38:50 -07:00
macintosh.h m68k/mac/: possible cleanups 2008-07-20 17:24:39 -07:00
macints.h
math-emu.h
mc146818rtc.h
md.h m68k: remove CVS keywords 2008-07-20 17:24:38 -07:00
mman.h
mmu.h
mmu_context.h [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction 2007-05-02 19:27:14 +02:00
mmzone.h m68k: discontinuous memory support 2007-05-31 07:58:14 -07:00
module.h m68k: discontinuous memory support 2007-05-31 07:58:14 -07:00
motorola_pgalloc.h CONFIG_HIGHPTE vs. sub-page page tables. 2008-02-08 09:22:42 -08:00
motorola_pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
movs.h
msgbuf.h
mutex.h
mvme16xhw.h
mvme147hw.h
namei.h
nubus.h
openprom.h m68k: remove CVS keywords 2008-07-20 17:24:38 -07:00
oplib.h m68k: remove AP1000 code 2008-07-20 17:24:38 -07:00
page.h PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
page_offset.h
param.h avoid overflows in kernel/time.c 2008-02-08 09:22:39 -08:00
parport.h
pci.h PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries() 2007-07-11 16:02:07 -07:00
percpu.h
pgalloc.h m68k: discontinuous memory support 2007-05-31 07:58:14 -07:00
pgtable.h cleanup after APUS removal 2008-02-06 10:41:01 -08:00
poll.h Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
posix_types.h asm-*/posix_types.h: scrub __GLIBC__ 2008-02-08 09:22:34 -08:00
processor.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
ptrace.h
q40_master.h
q40ints.h
raw_io.h m68k {in,out}_le{16,32} endianness misannotation 2007-07-26 11:11:57 -07:00
resource.h
rtc.h
sbus.h m68k: remove stale ARCH_SUN4 #define 2008-07-20 17:24:39 -07:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
sections.h
segment.h
semaphore.h Generic semaphore implementation 2008-04-17 10:42:34 -04:00
sembuf.h
serial.h
setup.h m68k: export m68k_mmutype 2008-05-18 13:28:50 -07:00
shm.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
socket.h [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
spinlock.h
stat.h
statfs.h
string.h
sun3-head.h m68k: remove CVS keywords 2008-07-20 17:24:38 -07:00
sun3_pgalloc.h CONFIG_HIGHPTE vs. sub-page page tables. 2008-02-08 09:22:42 -08:00
sun3_pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
sun3ints.h
sun3mmu.h
sun3x.h
sun3xflop.h
sun3xprom.h
suspend.h
system.h Add cmpxchg_local to m86k 2008-02-07 08:42:32 -08:00
termbits.h m68k: Enable arbitary speed tty support 2007-08-22 19:52:45 -07:00
termios.h m68k: Enable arbitary speed tty support 2007-08-22 19:52:45 -07:00
thread_info.h rename thread_info to stack 2007-05-09 12:30:56 -07:00
timex.h
tlb.h
tlbflush.h m68k: Allow no CPU/platform type for allnoconfig 2008-07-20 17:24:38 -07:00
topology.h
traps.h
types.h m68k: types: use <asm-generic/int-*.h> for the m68k architecture 2008-05-02 16:18:28 -07:00
uaccess.h m68k: Convert access_ok() to an inline function 2008-05-18 13:28:48 -07:00
ucontext.h
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
unistd.h m68k{,nommu}: Wire up new timerfd syscalls 2008-03-04 08:04:11 -08:00
user.h Sanitize the type of struct user.u_ar0 2008-02-07 08:42:30 -08:00
virtconvert.h m68k: discontinuous memory support 2007-05-31 07:58:14 -07:00
xor.h
zorro.h