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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>		17 years ago
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Kbuild	m68k: Export cachectl.h	17 years ago
a.out-core.h	aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUT	17 years ago
a.out.h	aout: move STACK_TOP[_MAX] to asm/processor.h	17 years ago
adb_iop.h	…
amigahw.h	m68k/amiga/: possible cleanups	17 years ago
amigaints.h	m68k/amiga/: possible cleanups	17 years ago
amigayle.h	…
amipcmcia.h	…
apollodma.h	m68k: remove CVS keywords	17 years ago
apollohw.h	[PATCH] m68k: convert apollo irq code	19 years ago
atafd.h	…
atafdreg.h	…
atari_joystick.h	…
atari_stdma.h	IRQ: Use the new typedef for interrupt handler function pointers	19 years ago
atari_stram.h	…
atarihw.h	further UTF-8 fixes and name correction	18 years ago
atariints.h	further UTF-8 fixes and name correction	18 years ago
atarikb.h	m68k: Atari keyboard and mouse support.	18 years ago
atomic.h	atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency	18 years ago
auxvec.h	…
bitops.h	m68k: Add ext2_find_{first,next}_bit() for ext4	17 years ago
blinken.h	…
bootinfo.h	…
bug.h	m68k: Make gcc aware that BUG() does not return	17 years ago
bugs.h	…
bvme6000hw.h	[PATCH] m68k: convert VME irq code	19 years ago
byteorder.h	…
cache.h	…
cachectl.h	…
cacheflush.h	[PATCH] Optimize D-cache alias handling on fork	18 years ago
checksum.h	[NET]: M68K checksum annotations and cleanups.	18 years ago
contregs.h	…
cputime.h	…
current.h	…
delay.h	…
device.h	Driver core: add dev_archdata to struct device	18 years ago
div64.h	rename div64_64 to div64_u64	17 years ago
dma-mapping.h	[PATCH] m68k dma-mapping: gfp_t annotations	18 years ago
dma.h	Don't include linux/config.h from anywhere else in include/	19 years ago
dsp56k.h	…
dvma.h	PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures	17 years ago
elf.h	Cleanup asm/{elf,page,user}.h: #ifdef __KERNEL__ is no longer needed	17 years ago
emergency-restart.h	…
entry.h	Don't include linux/config.h from anywhere else in include/	19 years ago
errno.h	…
fb.h	fbdev: detect primary display device	18 years ago
fbio.h	…
fcntl.h	…
floppy.h	cleanup floppy.h	17 years ago
fpu.h	m68k: Allow no CPU/platform type for allnoconfig	17 years ago
futex.h	…
hardirq.h	Don't include linux/config.h from anywhere else in include/	19 years ago
hp300hw.h	…
hw_irq.h	…
hwtest.h	…
ide.h	ide: add hwif->ack_intr hook	17 years ago
idprom.h	…
intersil.h	…
io.h	m68k: Prefix ISA type with ISA_TYPE_	17 years ago
ioctl.h	…
ioctls.h	m68k: Enable arbitary speed tty support	18 years ago
ipcbuf.h	…
irq.h	m68k: Allow no CPU/platform type for allnoconfig	17 years ago
irq_regs.h	[PATCH] m68k pt_regs fixes, part 2	19 years ago
kdebug.h	move die notifier handling to common code	18 years ago
kmap_types.h	…
kvm.h	kvm: provide kvm.h for all architecture: fixes headers_install	17 years ago
linkage.h	…
local.h	…
mac_asc.h	…
mac_baboon.h	m68k/mac/: possible cleanups	17 years ago
mac_iop.h	[PATCH] m68k pt_regs fixes	19 years ago
mac_mouse.h	…
mac_oss.h	[PATCH] m68k: convert mac irq code	19 years ago
mac_psc.h	…
mac_via.h	m68k/mac/: possible cleanups	17 years ago
machdep.h	IRQ: Use the new typedef for interrupt handler function pointers	19 years ago
machines.h	m68k/sun3/: possible cleanups	17 years ago
machw.h	m68k: remove old mac_esp cruft	17 years ago
macintosh.h	m68k/mac/: possible cleanups	17 years ago
macints.h	[PATCH] m68k: convert mac irq code	19 years ago
math-emu.h	[PATCH] m68k: work around binutils tokenizer change	18 years ago
mc146818rtc.h	[PATCH] rtc-cmos needs RTC_ALWAYS_BCD known	18 years ago
md.h	m68k: remove CVS keywords	17 years ago
mman.h	…
mmu.h	…
mmu_context.h	[PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction	18 years ago
mmzone.h	m68k: discontinuous memory support	18 years ago
module.h	m68k: discontinuous memory support	18 years ago
motorola_pgalloc.h	CONFIG_HIGHPTE vs. sub-page page tables.	17 years ago
motorola_pgtable.h	mm: introduce pte_special pte bit	17 years ago
movs.h	…
msgbuf.h	…
mutex.h	…
mvme16xhw.h	[PATCH] m68k: convert VME irq code	19 years ago
mvme147hw.h	[PATCH] m68k: convert VME irq code	19 years ago
namei.h	…
nubus.h	…
openprom.h	m68k: remove CVS keywords	17 years ago
oplib.h	m68k: remove AP1000 code	17 years ago
page.h	PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures	17 years ago
page_offset.h	Don't include linux/config.h from anywhere else in include/	19 years ago
param.h	avoid overflows in kernel/time.c	17 years ago
parport.h	…
pci.h	PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries()	18 years ago
percpu.h	…
pgalloc.h	m68k: discontinuous memory support	18 years ago
pgtable.h	cleanup after APUS removal	17 years ago
poll.h	Consolidate asm/poll.h	18 years ago
posix_types.h	asm-*/posix_types.h: scrub __GLIBC__	17 years ago
processor.h	aout: move STACK_TOP[_MAX] to asm/processor.h	17 years ago
ptrace.h	…
q40_master.h	…
q40ints.h	…
raw_io.h	m68k {in,out}_le{16,32} endianness misannotation	18 years ago
resource.h	…
rtc.h	fix file specification in comments	19 years ago
sbus.h	m68k: remove stale ARCH_SUN4 #define	17 years ago
scatterlist.h	Add CONFIG_DEBUG_SG sg validation	17 years ago
sections.h	…
segment.h	…
semaphore.h	Generic semaphore implementation	17 years ago
sembuf.h	…
serial.h	Don't include linux/config.h from anywhere else in include/	19 years ago
setup.h	m68k: export m68k_mmutype	17 years ago
shm.h	Don't include linux/config.h from anywhere else in include/	19 years ago
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	[PATCH] missing forward declaration of pt_regs (asm-m68k/signal.h)	19 years ago
socket.h	[NET]: Introducing socket mark socket option.	17 years ago
sockios.h	[NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution	18 years ago
spinlock.h	…
stat.h	…
statfs.h	…
string.h	[PATCH] m68k: cleanup string functions	19 years ago
sun3-head.h	m68k: remove CVS keywords	17 years ago
sun3_pgalloc.h	CONFIG_HIGHPTE vs. sub-page page tables.	17 years ago
sun3_pgtable.h	mm: introduce pte_special pte bit	17 years ago
sun3ints.h	[PATCH] Sun3: General updates	18 years ago
sun3mmu.h	[PATCH] sun3_ioremap() prototype	18 years ago
sun3x.h	…
sun3xflop.h	[PATCH] m68k pt_regs fixes	19 years ago
sun3xprom.h	…
suspend.h	…
system.h	Add cmpxchg_local to m86k	17 years ago
termbits.h	m68k: Enable arbitary speed tty support	18 years ago
termios.h	m68k: Enable arbitary speed tty support	18 years ago
thread_info.h	rename thread_info to stack	18 years ago
timex.h	…
tlb.h	…
tlbflush.h	m68k: Allow no CPU/platform type for allnoconfig	17 years ago
topology.h	…
traps.h	[PATCH] m68k: convert generic irq code to irq controller	19 years ago
types.h	m68k: types: use <asm-generic/int-*.h> for the m68k architecture	17 years ago
uaccess.h	m68k: Convert access_ok() to an inline function	17 years ago
ucontext.h	…
unaligned.h	kernel: Move arches to use common unaligned access	17 years ago
unistd.h	m68k{,nommu}: Wire up new timerfd syscalls	17 years ago
user.h	Sanitize the type of struct user.u_ar0	17 years ago
virtconvert.h	m68k: discontinuous memory support	18 years ago
xor.h	…
zorro.h	…