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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
..
native [IA64] pvops: paravirtualize NR_IRQS 2008-05-27 15:09:30 -07:00
sn [IA64] Fix CONFIG_IA64_SGI_UV build error 2008-06-16 09:02:03 -07:00
uv [IA64] Update ia64 mmr list for SGI uv 2008-07-17 11:27:05 -07:00
a.out.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
acpi-ext.h
acpi.h [IA64] Minimize per_cpu reservations. 2008-04-08 13:51:35 -07:00
agp.h x86: remove flush_agp_mappings() 2008-01-30 13:34:07 +01:00
asmmacro.h
atomic.h
auxvec.h
bitops.h generic: implement __fls on all 64-bit archs 2008-04-26 19:21:16 +02:00
break.h
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
checksum.h
compat.h asm-*/compat.h: fix typo in comment 2008-02-03 16:32:51 +02:00
cpu.h [IA64] fix section mismatch in arch/ia64/kernel/topology.c 2008-04-30 14:08:07 -07:00
cputime.h [IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting) 2008-02-20 12:55:37 -08:00
current.h
cyclone.h
delay.h
device.h
div64.h
dma-mapping.h dma/ia64: update ia64 machvecs, swiotlb.c 2008-04-29 08:06:12 -07:00
dma.h
dmi.h dmi: clean-up dmi helper declarations 2008-05-01 08:04:01 -07:00
elf.h [IA64] use CORE_DUMP_USE_REGSET 2008-03-12 16:27:35 -07:00
emergency-restart.h
errno.h
esi.h
fb.h
fcntl.h
fpswa.h
fpu.h
futex.h asm-*/futex.h should include linux/uaccess.h 2008-04-30 08:29:52 -07:00
gcc_intrin.h [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions. 2008-05-27 14:40:18 -07:00
hardirq.h
hpsim.h [IA64] Cleanup HPSIM code (was: Re: Enable early console for Ski simulator) 2007-09-01 02:52:25 -07:00
hugetlb.h hugetlb: modular state for hugetlb page size 2008-07-24 10:47:17 -07:00
hw_irq.h [IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations. 2008-05-27 15:11:10 -07:00
ia32.h
ia64regs.h
ide.h ide: remove ide_init_default_irq() macro 2008-04-18 00:46:35 +02:00
intel_intrin.h [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions. 2008-05-27 14:40:18 -07:00
intrinsics.h [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions. 2008-05-27 14:40:18 -07:00
io.h dmi: clean-up dmi helper declarations 2008-05-01 08:04:01 -07:00
ioctl.h
ioctls.h
iosapic.h [IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic. 2008-05-27 15:10:41 -07:00
ipcbuf.h
irq.h [IA64] pvops: paravirtualize NR_IRQS 2008-05-27 15:09:30 -07:00
irq_regs.h
Kbuild [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions. 2008-05-27 14:40:18 -07:00
kdebug.h x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
kexec.h
kmap_types.h
kprobes.h [IA64] kprobes: kprobe-booster for ia64 2008-04-09 10:36:43 -07:00
kregs.h [IA64] Add API for allocating Dynamic TR resource. 2008-04-03 11:02:58 -07:00
kvm.h KVM: ia64: Set KVM_IOAPIC_NUM_PINS to 48 2008-05-18 14:34:16 +03:00
kvm_host.h KVM: Add coalesced MMIO support (ia64 part) 2008-07-20 12:42:31 +03:00
kvm_para.h KVM: ia64: Add header files for kvm/ia64 2008-04-27 12:01:02 +03:00
libata-portmap.h
linkage.h
local.h
machvec.h [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
machvec_dig.h
machvec_hpsim.h
machvec_hpzx1.h dma/ia64: update ia64 machvecs, swiotlb.c 2008-04-29 08:06:12 -07:00
machvec_hpzx1_swiotlb.h dma/ia64: update ia64 machvecs, swiotlb.c 2008-04-29 08:06:12 -07:00
machvec_init.h
machvec_sn2.h dma/ia64: update ia64 machvecs, swiotlb.c 2008-04-29 08:06:12 -07:00
machvec_uv.h [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
mc146818rtc.h
mca.h [IA64] simplify notify hooks in mca.c 2008-04-22 08:56:38 -07:00
mca_asm.h [IA64] mca style cleanup 2008-02-04 15:42:06 -08:00
meminit.h [IA64] Fix NUMA configuration issue 2008-04-11 15:21:35 -07:00
mman.h
mmu.h
mmu_context.h [IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel paravirtualization friendly. 2008-05-27 14:38:44 -07:00
mmzone.h
module.h
msgbuf.h
mutex.h
namei.h
nodedata.h
numa.h [IA64] Minimize per_cpu reservations. 2008-04-08 13:51:35 -07:00
page.h PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
pal.h [IA64] Itanium Spec updates 2008-04-09 13:05:54 -07:00
param.h [IA64] Fix build for sim_defconfig 2008-02-11 13:23:46 -08:00
paravirt.h [IA64] pvops: add to hooks, pv_time_ops, for steal time accounting. 2008-05-27 15:11:42 -07:00
paravirt_privop.h [IA64] pvops: paravirtualize entry.S 2008-05-27 15:08:01 -07:00
parport.h
patch.h [IA64] Workaround for RSE issue 2008-05-27 13:24:39 -07:00
pci.h
percpu.h ia64: on UP percpu variables are not small memory model 2008-01-30 23:27:58 +01:00
perfmon.h
perfmon_default_smpl.h
pgalloc.h CONFIG_HIGHPTE vs. sub-page page tables. 2008-02-08 09:22:42 -08:00
pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
poll.h
posix_types.h
processor.h ACPI : Create "idle=nomwait" bootparam 2008-07-16 23:27:05 +02:00
ptrace.h [IA64] Workaround for RSE issue 2008-05-27 13:24:39 -07:00
ptrace_offsets.h
resource.h
rse.h
rwsem.h
sal.h [IA64] Kernel parameter for max number of concurrent global TLB purges 2008-04-04 11:06:38 -07:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
sections.h [IA64] Workaround for RSE issue 2008-05-27 13:24:39 -07:00
segment.h
semaphore.h Generic semaphore implementation 2008-04-17 10:42:34 -04:00
sembuf.h
serial.h
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h Pull pvops into release branch 2008-07-17 10:53:37 -07:00
socket.h [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
sockios.h
sparsemem.h
spinlock.h remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
spinlock_types.h
stat.h
statfs.h
string.h
suspend.h
system.h [IA64] pvops: preparation: introduce ia64_get_psr_i() to make kernel paravirtualization friendly. 2008-05-27 14:39:07 -07:00
termbits.h
termios.h
thread_info.h [IA64] TS_RESTORE_SIGMASK 2008-05-01 14:29:44 -07:00
timex.h
tlb.h [IA64] Add API for allocating Dynamic TR resource. 2008-04-03 11:02:58 -07:00
tlbflush.h [IA64] Multiple outstanding ptc.g instruction support 2008-04-04 11:05:59 -07:00
topology.h [IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id 2008-04-29 15:05:29 -07:00
types.h ia64: types: use <asm-generic/int-*.h> for the ia64 architecture 2008-05-02 16:18:21 -07:00
uaccess.h
ucontext.h
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
uncached.h [IA64] allocate multiple contiguous pages via uncached allocator 2008-04-29 13:49:01 -07:00
unistd.h [IA64] Wire up timerfd_{create,settime,gettime} syscalls 2008-02-08 12:00:32 -08:00
unwind.h
user.h Sanitize the type of struct user.u_ar0 2008-02-07 08:42:30 -08:00
ustack.h
vga.h
xor.h