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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
..
boot Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
common Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-23 18:24:08 -07:00
configs [ARM] Merge most of the PXA work for initial merge 2008-07-14 23:34:46 +01:00
kernel PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
lib [ARM] cache align memset and memzero 2008-06-22 22:44:39 +02:00
mach-aaec2000 arch: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:14:49 -04:00
mach-at91 Merge branches 'at91', 'dyntick', 'ep93xx', 'iop', 'ixp', 'misc', 'orion', 'omap-reviewed', 'rpc', 'rtc' and 's3c' into devel 2008-07-10 16:38:50 +01:00
mach-clps711x [ARM] Add initial sparsemem support 2008-04-19 11:36:48 +01:00
mach-clps7500 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-davinci arm: use non-racy method for /proc/davinci_clocks creation 2008-04-29 08:06:21 -07:00
mach-ebsa110 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-ep93xx [ARM] 5171/1: ep93xx: fix compilation of modules using clocks 2008-07-10 14:50:21 +01:00
mach-footbridge [ARM] 5015/1: arm: remove ARCH_CO285 2008-05-02 23:44:57 +01:00
mach-h720x [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-imx Merge branch 'imx' into devel 2008-07-10 16:41:50 +01:00
mach-integrator arm: bus_id -> dev_name() and dev_set_name() conversions 2008-07-21 21:55:03 -07:00
mach-iop13xx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-iop32x i2c: Convert most new-style drivers to use module aliasing 2008-04-29 23:11:40 +02:00
mach-iop33x iop: unconditionally initialize the ATU on platforms known to be 'hosts' 2008-03-26 12:33:41 -07:00
mach-ixp4xx [ARM] Merge most of the PXA work for initial merge 2008-07-14 23:34:46 +01:00
mach-ixp23xx [ARM] remove duplicate includes 2008-01-26 14:50:07 +00:00
mach-ixp2000 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-kirkwood [ARM] Kirkwood: use chip_delay 2008-06-30 16:04:46 -04:00
mach-ks8695 [ARM] 4981/1: [KS8695] Simple LED driver 2008-04-17 15:58:25 +01:00
mach-l7200 [ARM] Remove compatibility layer for ARM irqs 2006-11-30 12:24:47 +00:00
mach-lh7a40x [ARM] fix lh7a40x/kev7a400 build 2008-04-20 16:40:47 +01:00
mach-loki [ARM] add Marvell Loki (88RC8480) SoC support 2008-06-22 22:45:02 +02:00
mach-msm [ARM] msm: dma support for MSM7X00A 2008-01-26 14:39:14 +00:00
mach-mv78xx0 [ARM] add Marvell 78xx0 ARM SoC support 2008-06-22 22:45:10 +02:00
mach-mx2 i.MX27 family: Add the Phytec PCM970 evaluation board 2008-07-05 10:03:01 +02:00
mach-mx3 MX3: Adapt mx31lite to new timer init style 2008-07-05 10:02:53 +02:00
mach-netx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-ns9xxx Merge branch 'irq-fix' of git://www.modarm9.com/gitsrc/pub/people/ukleinek/linux-2.6.git 2008-05-07 21:55:01 +01:00
mach-omap1 Merge branches 'at91', 'dyntick', 'ep93xx', 'iop', 'ixp', 'misc', 'orion', 'omap-reviewed', 'rpc', 'rtc' and 's3c' into devel 2008-07-10 16:38:50 +01:00
mach-omap2 Merge branches 'at91', 'dyntick', 'ep93xx', 'iop', 'ixp', 'misc', 'orion', 'omap-reviewed', 'rpc', 'rtc' and 's3c' into devel 2008-07-10 16:38:50 +01:00
mach-orion5x [ARM] Orion: LED support for HP mv2120 2008-07-07 18:38:24 -04:00
mach-pnx4008 arch: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:14:49 -04:00
mach-pxa [ARM] Merge most of the PXA work for initial merge 2008-07-14 23:34:46 +01:00
mach-realview [ARM] 5121/1: Annotate platform_secondary_init with trace_hardirqs_off 2008-07-03 16:39:56 +01:00
mach-rpc Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-s3c2400 [ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components 2007-02-11 17:36:09 +00:00
mach-s3c2410 [ARM] Acer n30: Minor style and indentation fixes. 2008-07-07 18:13:05 +01:00
mach-s3c2412 [ARM] S3C2412: Correct parents for EREFCLK and UREFCLK 2008-07-03 16:51:30 +01:00
mach-s3c2440 [ARM] AT2440EVB: Add DM9000A network controller support. 2008-07-07 18:13:01 +01:00
mach-s3c2442 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code 2008-01-28 13:20:52 +00:00
mach-s3c2443 [ARM] S3C2443: Add prediv clk and fix setting of h and p clocks 2008-07-07 18:13:02 +01:00
mach-sa1100 Merge branches 'pxa-ian' and 'pxa-xm270' into pxa 2008-07-12 21:42:04 +01:00
mach-shark [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-versatile arch: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:14:49 -04:00
mm mm: drop unneeded pgdat argument from free_area_init_node() 2008-07-24 10:47:16 -07:00
nwfpe Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
oprofile smp_call_function: get rid of the unused nonatomic/retry argument 2008-06-26 11:24:35 +02:00
plat-iop [ARM] 5160/1: IOP3XX: gpio/gpiolib support 2008-07-09 23:31:42 +01:00
plat-mxc i.MX2 family: Add basic mach support 2008-07-05 10:03:02 +02:00
plat-omap PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
plat-orion [ARM] Orion: PCIe x4/x1 detection support 2008-06-22 22:45:09 +02:00
plat-s3c [ARM] 4518/1: S3C: Rename watchdog configuration options 2007-07-22 16:44:38 +01:00
plat-s3c24xx [ARM] S3C24XX: PWM API support. 2008-07-03 16:51:30 +01:00
tools [ARM] Update mach-types 2008-07-13 12:05:21 +01:00
vfp smp_call_function: get rid of the unused nonatomic/retry argument 2008-06-26 11:24:35 +02:00
Kconfig add HAVE_CLK to Kconfig, for driver dependencies 2008-07-24 10:47:13 -07:00
Kconfig-nommu [ARM] 4532/1: allow configuration of processor ID 2007-10-12 23:43:02 +01:00
Kconfig.debug [ARM] CONFIG_DEBUG_STACK_USAGE 2008-01-26 14:50:06 +00:00
Makefile Merge branch 'imx' into devel 2008-07-10 16:41:50 +01:00