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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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Makefile	Generic semaphore implementation	17 years ago
asm-offsets.c	h8300: use kbuild.h instead of defining macros in asm-offsets.c	17 years ago
entry.S	h8300 entry.S update	18 years ago
gpio.c	…
h8300_ksyms.c	Generic semaphore implementation	17 years ago
init_task.c	[PATCH] take init_files to fs/file.c	17 years ago
irq.c	h8300: IRQ handling update	17 years ago
module.c	…
process.c	h8300: missing include	18 years ago
ptrace.c	PTRACE_POKEDATA consolidation	18 years ago
setup.c	PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures	17 years ago
signal.c	h8300: signal.c typo fix	17 years ago
sys_h8300.c	unified (weak) sys_pipe implementation	17 years ago
syscalls.S	…
time.c	spelling fixes: arch/h8300/	18 years ago
traps.c	spelling fixes: arch/h8300/	18 years ago
vmlinux.lds.S	all archs: consolidate init and exit sections in vmlinux.lds.h	17 years ago