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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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native	[IA64] pvops: paravirtualize NR_IRQS	17 years ago
sn	[IA64] Fix CONFIG_IA64_SGI_UV build error	17 years ago
uv	[IA64] Update ia64 mmr list for SGI uv	17 years ago
Kbuild	[IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.	17 years ago
a.out.h	aout: move STACK_TOP[_MAX] to asm/processor.h	17 years ago
acpi-ext.h	…
acpi.h	[IA64] Minimize per_cpu reservations.	17 years ago
agp.h	x86: remove flush_agp_mappings()	17 years ago
asmmacro.h	[IA64] remove per-cpu ia64_phys_stacked_size_p8	18 years ago
atomic.h	[IA64] Use atomic64_read to read an atomic64_t.	18 years ago
auxvec.h	…
bitops.h	generic: implement __fls on all 64-bit archs	17 years ago
break.h	…
bug.h	…
bugs.h	…
byteorder.h	…
cache.h	…
cacheflush.h	remove asm/bitops.h includes	17 years ago
checksum.h	…
compat.h	asm-*/compat.h: fix typo in comment	17 years ago
cpu.h	[IA64] fix section mismatch in arch/ia64/kernel/topology.c	17 years ago
cputime.h	[IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting)	17 years ago
current.h	…
cyclone.h	…
delay.h	…
device.h	…
div64.h	…
dma-mapping.h	dma/ia64: update ia64 machvecs, swiotlb.c	17 years ago
dma.h	[IA64] swiotlb bug fixes	18 years ago
dmi.h	dmi: clean-up dmi helper declarations	17 years ago
elf.h	[IA64] use CORE_DUMP_USE_REGSET	17 years ago
emergency-restart.h	…
errno.h	…
esi.h	[IA64] remove bogus prototype ia64_esi_init()	18 years ago
fb.h	fbdev: detect primary display device	18 years ago
fcntl.h	…
fpswa.h	…
fpu.h	…
futex.h	asm-*/futex.h should include linux/uaccess.h	17 years ago
gcc_intrin.h	[IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.	17 years ago
hardirq.h	…
hpsim.h	[IA64] Cleanup HPSIM code (was: Re: Enable early console for Ski simulator)	18 years ago
hugetlb.h	hugetlb: modular state for hugetlb page size	17 years ago
hw_irq.h	[IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations.	17 years ago
ia32.h	[IA64] rename partial_page	18 years ago
ia64regs.h	…
ide.h	ide: remove ide_init_default_irq() macro	17 years ago
intel_intrin.h	[IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.	17 years ago
intrinsics.h	[IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.	17 years ago
io.h	dmi: clean-up dmi helper declarations	17 years ago
ioctl.h	…
ioctls.h	[IA64] arbitary speed tty ioctl support	18 years ago
iosapic.h	[IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic.	17 years ago
ipcbuf.h	…
irq.h	[IA64] pvops: paravirtualize NR_IRQS	17 years ago
irq_regs.h	…
kdebug.h	x86: optimize page faults like all other achitectures and kill notifier cruft	17 years ago
kexec.h	kdump/kexec: calculate note size at compile time	18 years ago
kmap_types.h	…
kprobes.h	[IA64] kprobes: kprobe-booster for ia64	17 years ago
kregs.h	[IA64] Add API for allocating Dynamic TR resource.	17 years ago
kvm.h	KVM: ia64: Set KVM_IOAPIC_NUM_PINS to 48	17 years ago
kvm_host.h	KVM: Add coalesced MMIO support (ia64 part)	17 years ago
kvm_para.h	KVM: ia64: Add header files for kvm/ia64	17 years ago
libata-portmap.h	ATA convert GSI to irq on ia64	18 years ago
linkage.h	…
local.h	local_t: ia64 extension	18 years ago
machvec.h	[IA64] machvec support for SGI UV platform	17 years ago
machvec_dig.h	…
machvec_hpsim.h	…
machvec_hpzx1.h	dma/ia64: update ia64 machvecs, swiotlb.c	17 years ago
machvec_hpzx1_swiotlb.h	dma/ia64: update ia64 machvecs, swiotlb.c	17 years ago
machvec_init.h	[IA64] SN2 needs platform specific irq_to_vector() function.	18 years ago
machvec_sn2.h	dma/ia64: update ia64 machvecs, swiotlb.c	17 years ago
machvec_uv.h	[IA64] machvec support for SGI UV platform	17 years ago
mc146818rtc.h	…
mca.h	[IA64] simplify notify hooks in mca.c	17 years ago
mca_asm.h	[IA64] mca style cleanup	17 years ago
meminit.h	[IA64] Fix NUMA configuration issue	17 years ago
mman.h	…
mmu.h	…
mmu_context.h	[IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel paravirtualization friendly.	17 years ago
mmzone.h	…
module.h	…
msgbuf.h	…
mutex.h	…
namei.h	…
nodedata.h	…
numa.h	[IA64] Minimize per_cpu reservations.	17 years ago
page.h	PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures	17 years ago
pal.h	[IA64] Itanium Spec updates	17 years ago
param.h	[IA64] Fix build for sim_defconfig	17 years ago
paravirt.h	[IA64] pvops: add to hooks, pv_time_ops, for steal time accounting.	17 years ago
paravirt_privop.h	[IA64] pvops: paravirtualize entry.S	17 years ago
parport.h	…
patch.h	[IA64] Workaround for RSE issue	17 years ago
pci.h	[IA64] Un-break ia64 build	18 years ago
percpu.h	ia64: on UP percpu variables are not small memory model	17 years ago
perfmon.h	…
perfmon_default_smpl.h	…
pgalloc.h	CONFIG_HIGHPTE vs. sub-page page tables.	17 years ago
pgtable.h	mm: introduce pte_special pte bit	17 years ago
poll.h	Consolidate asm/poll.h	18 years ago
posix_types.h	…
processor.h	ACPI : Create "idle=nomwait" bootparam	17 years ago
ptrace.h	[IA64] Workaround for RSE issue	17 years ago
ptrace_offsets.h	…
resource.h	[IA64] Remove stack hard limit on ia64	18 years ago
rse.h	…
rwsem.h	[IA64] Prevent people from directly including <asm/rwsem.h>.	18 years ago
sal.h	[IA64] Kernel parameter for max number of concurrent global TLB purges	17 years ago
scatterlist.h	Add CONFIG_DEBUG_SG sg validation	17 years ago
sections.h	[IA64] Workaround for RSE issue	17 years ago
segment.h	…
semaphore.h	Generic semaphore implementation	17 years ago
sembuf.h	…
serial.h	…
setup.h	[PATCH] ia64: 2048-byte command line	18 years ago
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	…
smp.h	Pull pvops into release branch	17 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
sparsemem.h	…
spinlock.h	remove asm/bitops.h includes	17 years ago
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.	17 years ago
termbits.h	[IA64] arbitary speed tty ioctl support	18 years ago
termios.h	[IA64] arbitary speed tty ioctl support	18 years ago
thread_info.h	[IA64] TS_RESTORE_SIGMASK	17 years ago
timex.h	…
tlb.h	[IA64] Add API for allocating Dynamic TR resource.	17 years ago
tlbflush.h	[IA64] Multiple outstanding ptc.g instruction support	17 years ago
topology.h	[IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id	17 years ago
types.h	ia64: types: use <asm-generic/int-*.h> for the ia64 architecture	17 years ago
uaccess.h	…
ucontext.h	…
unaligned.h	kernel: Move arches to use common unaligned access	17 years ago
uncached.h	[IA64] allocate multiple contiguous pages via uncached allocator	17 years ago
unistd.h	[IA64] Wire up timerfd_{create,settime,gettime} syscalls	17 years ago
unwind.h	[IA64] Remove sparse warning from unwind code	18 years ago
user.h	Sanitize the type of struct user.u_ar0	17 years ago
ustack.h	arch: personality independent stack top	18 years ago
vga.h	…
xor.h	…