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linux-next/include/asm-m32r
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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
..
m32104ut [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
m32700ut m32r: remove dead config symbols from M32R code 2008-02-05 09:44:08 -08:00
mappi2 [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
mappi3 [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
opsput [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
a.out.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
addrspace.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
assembler.h m32r: Rename STI/CLI macros 2007-09-06 11:10:56 +09:00
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 [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h forbid asm/bitops.h direct inclusion 2007-10-19 11:53:41 -07:00
bug.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bugs.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
byteorder.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
cache.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
cachectl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cacheflush.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
checksum.h [NET]: M32R checksum annotations and cleanups. 2006-12-02 21:23:06 -08:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
delay.h Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h [PATCH] m32r: Use asm-generic/div64.h 2005-06-21 19:07:31 -07:00
dma.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
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 [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
flat.h Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
futex.h [PATCH] consolidate asm/futex.h 2006-01-08 20:13:39 -08:00
hardirq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
hw_irq.h [PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend() 2006-06-29 10:26:23 -07:00
ide.h ide: remove ide_init_default_irq() macro 2008-04-18 00:46:35 +02:00
io.h [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h m32r: enable arbitary speed tty rate setting 2007-07-16 09:05:38 -07:00
ipcbuf.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
irq_regs.h [PATCH] m32r pt_regs fixes 2006-10-07 10:51:15 -07:00
irq.h m32r: remove dead config symbols from M32R code 2008-02-05 09:44:08 -08:00
Kbuild Add empty Kbuild files for 'make headers_install' in remaining arches. 2006-06-18 12:58:53 +01:00
kdebug.h move die notifier handling to common code 2007-05-08 11:15:04 -07:00
kmap_types.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
kvm.h kvm: provide kvm.h for all architecture: fixes headers_install 2008-04-02 15:28:18 -07:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h local_t m32r use architecture specific cmpxchg_local 2008-02-07 08:42:32 -08:00
m32r_mp_fpga.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
m32r.h m32r: Define symbols to unify platform-dependent ICU checks 2007-09-03 11:30:18 +09:00
m32102.h [PATCH] m32r: support a synthesizable M32700 core 2006-12-08 08:28:37 -08:00
mc146818rtc.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
mman.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
mmu_context.h [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction 2007-05-02 19:27:14 +02:00
mmu.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
mmzone.h [PATCH] unify pfn_to_page: m32r pfn_to_page 2006-03-27 08:44:45 -08:00
module.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
msgbuf.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
namei.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
page.h PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
param.h avoid overflows in kernel/time.c 2008-02-08 09:22:39 -08:00
pci.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h CONFIG_HIGHPTE vs. sub-page page tables. 2008-02-08 09:22:42 -08:00
pgtable-2level.h m32r: fix pte_to_pgoff(), pgoff_to_pte() and __swp_type() macros 2007-05-11 08:29:33 -07:00
pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
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 m32r: convert to generic sys_ptrace 2007-10-16 09:43:04 -07:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
s1d13806.h [PATCH] m32r: framebuffer device support 2005-07-07 18:24:11 -07:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
sections.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
segment.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
semaphore.h Generic semaphore implementation 2008-04-17 10:42:34 -04:00
sembuf.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
serial.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
setup.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
shmbuf.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
shmparam.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
sigcontext.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
siginfo.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
signal.h core: remove last users of empty FASTCALL macro 2008-01-30 13:31:17 +01:00
smp.h m32r: convert to generic helpers for IPI function calls 2008-06-26 11:22:57 +02:00
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_types.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
spinlock.h [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
stat.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
syscall.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
system.h Fix m32r __xchg 2008-02-07 08:42:32 -08:00
termbits.h m32r: enable arbitary speed tty rate setting 2007-07-16 09:05:38 -07:00
termios.h m32r: enable arbitary speed tty rate setting 2007-07-16 09:05:38 -07:00
thread_info.h m32r: Update sys_rt_sigsuspend 2007-11-28 01:24:04 +09:00
timex.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
tlb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbflush.h remove unused flush_tlb_pgtables 2007-10-19 11:53:34 -07:00
topology.h [PATCH] m32r: build fix for asm-m32r/topology.h 2005-06-23 09:45:08 -07:00
types.h m32r: types: use <asm-generic/int-*.h> for the m32r architecture 2008-05-02 16:18:21 -07:00
uaccess.h asm-m32r/uaccess.h must #include <asm/setup.h> 2008-06-06 11:29:13 -07:00
ucontext.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
unistd.h timerfd: fix remaining architectures 2008-02-05 14:37:15 -08:00
user.h Sanitize the type of struct user.u_ar0 2008-02-07 08:42:30 -08:00
vga.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00
xor.h [PATCH] m32r: cosmetic updates and trivial fixes 2007-02-11 10:51:20 -08:00