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

..

acpi

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

cpu

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

.gitignore

arch/x86/kernel/.gitignore: Added vmlinux.lds to .gitignore file because it shouldn't be tracked.

2008-07-10 10:13:51 -07:00

alternative.c

x86: fix SMP alternatives: use mutex instead of spinlock, text_poke is sleepable

2008-05-23 21:56:52 +02:00

amd_iommu_init.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

amd_iommu.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

aperture_64.c

x86: make only GART code include gart.h

2008-07-11 11:00:54 +02:00

apic_32.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

apic_64.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

apm_32.c

Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

2008-07-16 17:25:46 -07:00

asm-offsets_32.c

x86/paravirt: split sysret and sysexit

2008-07-08 13:13:15 +02:00

asm-offsets_64.c

xen64: add asm-offsets

2008-07-16 10:58:55 +02:00

asm-offsets.c

i386: move kernel

2007-10-11 11:17:01 +02:00

audit_64.c

x86_64: move kernel

2007-10-11 11:17:24 +02:00

bios_uv.c

x86 BIOS interface for RTC on SGI UV

2008-07-18 14:35:14 +02:00

bootflag.c

x86: coding style cleanup for kernel/bootflag.c

2008-01-30 13:32:31 +01:00

cpuid.c

device create: x86: convert device_create to device_create_drvdata

2008-07-21 21:54:46 -07:00

crash_dump_32.c

kmap leak fix for x86_32 kdump

2007-10-19 11:53:33 -07:00

crash_dump_64.c

Delete filenames in comments.

2007-10-13 10:01:23 -07:00

crash.c

x86: allow machine_crash_shutdown to be replaced

2008-04-27 12:00:29 +03:00

doublefault_32.c

x86: unify tss_struct

2008-01-30 13:31:31 +01:00

ds.c

x86: debug Store - call kfree if only we really need it

2008-04-17 17:41:34 +02:00

e820.c

x86: introduce x86_quirks

2008-07-20 09:18:17 +02:00

early_printk.c

x86, generic: mark early_printk as asmlinkage

2008-06-18 13:11:01 +02:00

early-quirks.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

efi_32.c

x86: fix Intel Mac booting with EFI

2008-07-03 08:19:18 +02:00

efi_64.c

x86: add flags parameter to reserve_bootmem_generic()

2008-07-08 11:49:49 +02:00

efi_stub_32.S

i386: move kernel

2007-10-11 11:17:01 +02:00

efi_stub_64.S

x86: EFI runtime service support

2008-01-30 13:31:19 +01:00

efi.c

x86: introduce max_low_pfn_mapped for 64-bit

2008-07-11 10:24:04 +02:00

entry_32.S

i386 syscall audit fast-path

2008-07-23 18:00:30 -07:00

entry_64.S

x86_64 ia32 syscall audit fast-path

2008-07-23 17:55:22 -07:00

ftrace.c

ftrace: store mcount address in rec->ip

2008-06-23 22:10:56 +02:00

genapic_64.c

x86: introduce max_physical_apicid for bigsmp switching

2008-06-10 11:32:09 +02:00

genapic_flat_64.c

NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c

2008-07-20 10:21:10 +02:00

genx2apic_uv_x.c

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

geode_32.c

x86, geode: add a VSA2 ID for General Software

2008-06-19 14:19:03 +02:00

head32.c

x86: extract common part of head32.c and head64.c into head.c

2008-06-05 15:10:02 +02:00

head64.c

x86_64: add workaround for no %gs-based percpu

2008-07-16 10:58:13 +02:00

head_32.S

x86: boot secondary cpus through initial_code

2008-07-08 12:48:18 +02:00

head_64.S

Revert "x86_64: there's no need to preallocate level1_fixmap_pgt"

2008-07-16 11:07:30 +02:00

head.c

x86: move reserve_setup_data to setup.c

2008-07-08 13:16:14 +02:00

hpet.c

x86: make 64bit hpet_set_mapping to use ioremap too, v2

2008-07-14 09:24:17 +02:00

i386_ksyms_32.c

ftrace: store mcount address in rec->ip

2008-06-23 22:10:56 +02:00

i387.c

x86 ptrace: fix PTRACE_GETFPXREGS error

2008-07-01 11:03:31 +02:00

i8237.c

Driver core: change sysdev classes to use dynamic kobject names

2008-01-24 20:40:40 -08:00

i8253.c

x86: cleanup div_sc() usage

2008-04-26 17:35:47 +02:00

i8259.c

i8259: fix final ugliness

2008-06-02 11:55:52 +02:00

init_task.c

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

io_apic_32.c

x86: I/O APIC: Always report how the timer has been set up

2008-07-18 14:27:47 +02:00

io_apic_64.c

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

io_delay.c

x86: io delay - add checking for NULL early param

2008-07-09 13:57:54 +02:00

ioport.c

x86: refactor ioport unification

2008-01-30 13:33:10 +01:00

ipi.c

x86: APIC: remove apic_write_around(); use alternatives

2008-07-18 12:51:21 +02:00

irq_32.c

x86: use __page_aligned_data/bss

2008-07-16 10:54:39 +02:00

irq_64.c

x86: make /proc/stat account for all interrupts

2008-05-25 07:11:49 +02:00

irqinit_32.c

x86: rename the i8259_32/64.c leftovers to irqinit_32/64.c

2008-05-24 16:47:39 +02:00

irqinit_64.c

Merge branch 'generic-ipi' into generic-ipi-for-linus

2008-07-15 21:55:59 +02:00

k8.c

x86_64: move kernel

2007-10-11 11:17:24 +02:00

kdebugfs.c

x86: Add a arch directory for x86 under debugfs

2008-07-18 17:22:04 -07:00

kgdb.c

x86: KGDB build fix

2008-04-19 19:19:54 +02:00

kprobes.c

Kprobe smoke test lockdep warning

2008-07-15 11:18:03 +02:00

kvm.c

x86: KVM guest: hypercall batching

2008-04-27 12:00:28 +03:00

kvmclock.c

x86: KVM guest: make kvm_smp_prepare_boot_cpu() static

2008-07-20 12:42:37 +03:00

ldt.c

cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c

2008-07-18 22:02:58 +02:00

machine_kexec_32.c

Merge branch 'auto-ftrace-next' into tracing/for-linus

2008-07-14 16:11:52 +02:00

machine_kexec_64.c

Merge branch 'auto-ftrace-next' into tracing/for-linus

2008-07-14 16:11:52 +02:00

Makefile

Merge branch 'x86/paravirt-spinlocks' into x86/for-linus

2008-07-21 16:45:56 +02:00

mca_32.c

x86: coding style fixes to arch/x86/kernel/mca_32.c

2008-04-17 17:40:49 +02:00

mfgpt_32.c

geode: fix modular build

2008-06-12 21:25:51 +02:00

microcode.c

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

mmconf-fam10h_64.c

x86: move mmconfig declarations to header

2008-05-30 15:45:17 -07:00

module_32.c

i386: move kernel

2007-10-11 11:17:01 +02:00

module_64.c

PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures

2008-07-24 10:47:21 -07:00

mpparse.c

x86: extend and use x86_quirks to clean up NUMAQ code

2008-07-20 09:25:52 +02:00

msr.c

device create: x86: convert device_create to device_create_drvdata

2008-07-21 21:54:46 -07:00

nmi.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

numaq_32.c

x86: add ->pre_time_init to x86_quirks

2008-07-20 09:25:52 +02:00

olpc.c

x86: olpc: add One Laptop Per Child architecture support

2008-04-29 08:06:07 -07:00

paravirt_patch_32.c

x86/paravirt: split sysret and sysexit

2008-07-08 13:13:15 +02:00

paravirt_patch_64.c

x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility userspace

2008-07-08 13:15:52 +02:00

paravirt.c

x86: fix pte_flags() to only return flags, fix lguest (updated)

2008-07-22 10:41:18 +02:00

pci-calgary_64.c

x86: make only GART code include gart.h

2008-07-11 11:00:54 +02:00

pci-dma.c

driver core: fix a lot of printk usages of bus_id

2008-07-21 21:54:53 -07:00

pci-gart_64.c

driver core: fix a lot of printk usages of bus_id

2008-07-21 21:54:53 -07:00

pci-nommu.c

x86: make only GART code include gart.h

2008-07-11 11:00:54 +02:00

pci-swiotlb_64.c

x86: make only GART code include gart.h

2008-07-11 11:00:54 +02:00

pcspeaker.c

i386: move kernel

2007-10-11 11:17:01 +02:00

pmtimer_64.c

x86: move pmtmr related declarations

2008-01-30 13:30:18 +01:00

probe_roms_32.c

x86: seperate probe_roms into another file

2008-07-08 12:50:05 +02:00

process_32.c

Merge branch 'auto-ftrace-next' into tracing/for-linus

2008-07-14 16:11:52 +02:00

process_64.c

x86: clean up formatting of __switch_to

2008-07-16 10:54:25 +02:00

process.c

Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus

2008-07-21 16:37:17 +02:00

ptrace.c

x86 ptrace: user-sets-TF nits

2008-07-16 12:15:17 -07:00

pvclock.c

x86: Add structs and functions for paravirt clocksource

2008-06-24 21:02:31 +03:00

quirks.c

Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-15 10:39:57 -07:00

reboot_fixups_32.c

x86: constify data in reboot.c

2008-05-25 08:58:30 +02:00

reboot.c

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

relocate_kernel_32.S

x86: relocate_kernel - use predefined macroses for page attributes

2008-04-17 17:41:29 +02:00

relocate_kernel_64.S

x86: relocate_kernel - use predefined macroses for page attributes

2008-04-17 17:41:29 +02:00

rtc.c

provide rtc_cmos platform device

2008-06-12 18:05:42 -07:00

scx200_32.c

x86: fix sparse warning in kernel/scx200_32.c

2008-01-31 22:05:45 +01:00

setup_percpu.c

x86: convert Dprintk to pr_debug

2008-07-21 21:35:38 +02:00

setup.c

x86: use setup_clear_cpu_cap with disable_apic, fix

2008-07-22 09:05:45 +02:00

sigframe.h

x86: move struct definitions to unifed sigframe.h

2008-04-17 17:40:46 +02:00

signal_32.c

Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 19:36:53 -07:00

signal_64.c

Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 19:36:53 -07:00

smp.c

generic-ipi: fixlet

2008-07-06 14:01:50 +02:00

smpboot.c

Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-23 18:37:44 -07:00

smpcommon.c

x86: convert to generic helpers for IPI function calls

2008-06-26 11:21:54 +02:00

stacktrace.c

stacktrace: fix modular build, export print_stack_trace and save_stack_trace

2008-06-30 09:20:55 +02:00

step.c

x86 ptrace: user-sets-TF nits

2008-07-16 12:15:17 -07:00

summit_32.c

x86: make generic arch support NUMAQ

2008-06-10 11:34:42 +02:00

sys_i386_32.c

x86: coding style fixes to arch/x86/kernel/sys_i386_32.c

2008-06-10 12:34:54 +02:00

sys_x86_64.c

unified (weak) sys_pipe implementation

2008-05-03 13:50:33 -07:00

syscall_64.c

x86: coding style fixes to arch/x86/kernel/syscall_64.c

2008-04-17 17:40:48 +02:00

syscall_table_32.S

timerfd: wire the new timerfd API to the x86 family

2008-02-05 09:44:07 -08:00

tce_64.c

x86: Create clflush() inline, remove hardcoded wbinvd

2007-10-17 20:16:12 +02:00

test_nx.c

x86: Explicitly include required header files.

2008-04-17 17:41:15 +02:00

test_rodata.c

x86: include proper prototypes for rodata_test

2008-02-14 23:30:20 +01:00

time_32.c

x86: add ->pre_time_init to x86_quirks

2008-07-20 09:25:52 +02:00

time_64.c

x86: merge tsc_init and clocksource code

2008-07-09 07:43:27 +02:00

tlb_32.c

on_each_cpu(): kill unused 'retry' parameter

2008-06-26 11:24:38 +02:00

tlb_64.c

Merge branch 'generic-ipi' into generic-ipi-for-linus

2008-07-15 21:55:59 +02:00

tlb_uv.c

x86, SGI UV: uv_ptc_proc_write fix

2008-07-08 12:23:31 +02:00

tls.c

asmlinkage_protect replaces prevent_tail_call

2008-04-10 17:28:26 -07:00

tls.h

x86: x86 user_regset TLS

2008-01-30 13:31:52 +01:00

topology.c

x86: fix section mismatch warning in topology.c:arch_register_cpu

2008-02-19 16:18:30 +01:00

trampoline_32.S

x86: trampoline_32.S - switch to .cpuinit.data

2008-04-26 17:35:47 +02:00

trampoline_64.S

x86: move suspend wakeup code to C

2008-04-17 17:41:37 +02:00

trampoline.c

x86: extend e820 ealy_res support 32bit

2008-05-25 10:55:11 +02:00

traps_32.c

x86: introducing asm-x86/traps.h

2008-07-18 18:51:57 +02:00

traps_64.c

x86: introducing asm-x86/traps.h

2008-07-18 18:51:57 +02:00

tsc_sync.c

x86: add warning to check_tsc_warp()

2008-01-30 13:33:24 +01:00

tsc.c

x86: fix TSC build error on 32bit

2008-07-15 22:46:47 +02:00

verify_cpu_64.S

x86_64: move kernel

2007-10-11 11:17:24 +02:00

visws_quirks.c

x86: introduce x86_quirks

2008-07-20 09:18:17 +02:00

vm86_32.c

x86: replace most VM86 flags with flags from processor-flags.h

2008-04-17 17:41:33 +02:00

vmi_32.c

x86: APIC: remove apic_write_around(); use alternatives

2008-07-18 12:51:21 +02:00

vmiclock_32.c

x86: rename paravirtualized TSC functions

2008-07-09 07:43:28 +02:00

vmlinux_32.lds.S

Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-14 15:28:10 -07:00

vmlinux_64.lds.S

Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-07-14 15:28:10 -07:00

vmlinux.lds.S

i386: move kernel

2007-10-11 11:17:01 +02:00

vsmp_64.c

x86: vsmp_64 add missing includes

2008-05-25 08:58:24 +02:00

vsyscall_64.c

Merge branch 'generic-ipi' into generic-ipi-for-linus

2008-07-15 21:55:59 +02:00

x8664_ksyms_64.c

Merge branch 'auto-ftrace-next' into tracing/for-linus

2008-07-14 16:11:52 +02:00