It looks like ia64 implements atomic_t as a 64-bit value and expects atomic_t
to be 64-bit aligned, but does nothing to ensure that.
For x86, atomic_t is a 32-bit value and atomic64_t is a 64-bit value, and
the definition of atomic64_t is overridden in a way that ensures
64-bit (8 byte) alignment:
Generic definitions are in include/linux/types.h:
typedef struct {
int counter;
} atomic_t;
#define ATOMIC_INIT(i) { (i) }
#ifdef CONFIG_64BIT
typedef struct {
s64 counter;
} atomic64_t;
#endif
Override in arch/x86/include/asm/atomic64_32.h:
typedef struct {
s64 __aligned(8) counter;
} atomic64_t;
Perhaps ia64 needs to take over the definition of both atomic_t and atomic64_t
and do the same?
