kernel_samsung_sm7125

jenna

History

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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Makefile	kgdb: support for ARCH=arm	17 years ago
armksyms.c	ftrace: store mcount address in rec->ip	17 years ago
arthur.c	[ARM] arm/kernel/arthur.c: add MODULE_LICENSE	17 years ago
asm-offsets.c	arm: use kbuild.h instead of macros in asm-offsets.c	17 years ago
atags.c	clean up atags exporting code	17 years ago
atags.h	…
bios32.c	…
calls.S	Merge branch 'omap2-upstream' into devel	17 years ago
compat.c	…
compat.h	…
crunch-bits.S	…
crunch.c	…
debug.S	…
dma-isa.c	…
dma.c	…
ecard.c	arm: bus_id -> dev_name() and dev_set_name() conversions	17 years ago
ecard.h	[ARM] rpc: ecard: remove deprecated ecard_address() and relatives	17 years ago
entry-armv.S	…
entry-common.S	ftrace: store mcount address in rec->ip	17 years ago
entry-header.S	…
fiq.c	…
ftrace.c	ftrace: store mcount address in rec->ip	17 years ago
head-common.S	…
head-nommu.S	…
head.S	…
init_task.c	[PATCH] take init_files to fs/file.c	17 years ago
io.c	…
irq.c	…
isa.c	…
iwmmxt.S	…
kgdb.c	kgdb: support for ARCH=arm	17 years ago
kprobes-decode.c	kprobes/arm: fix decoding of arithmetic immediate instructions	17 years ago
kprobes.c	ftrace: export kretprobe_trampoline for function tracer	17 years ago
machine_kexec.c	…
module.c	PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures	17 years ago
process.c	[ARM] dyntick: Remove obsolete and unused ARM dyntick support	17 years ago
ptrace.c	…
ptrace.h	…
relocate_kernel.S	…
setup.c	kgdb: support for ARCH=arm	17 years ago
signal.c	…
signal.h	…
smp.c	on_each_cpu(): kill unused 'retry' parameter	17 years ago
stacktrace.c	Merge branch 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	17 years ago
stacktrace.h	…
sys_arm.c	unified (weak) sys_pipe implementation	17 years ago
sys_oabi-compat.c	…
thumbee.c	…
time.c	sysdev: Pass the attribute to the low level sysdev show/store function	17 years ago
traps.c	kgdb: support for ARCH=arm	17 years ago
vmlinux.lds.S	…
xscale-cp0.c	…