On Fri, Feb 21, 2014 at 12:43 PM, John Stultz <[email protected]> wrote: > From: Arve Hjønnevåg <[email protected]> > > For 64bit systems we want to use the same binder interface for 32bit and > 64bit processes. Thus the size and the layout of the structures passed > between the kernel and the userspace has to be the same for both 32 and > 64bit processes. > > This change replaces all the uses of void* and size_t with > binder_uintptr_t and binder_size_t. These are then typedefed to specific > sizes depending on the use of the interface, as follows: > * __u32 - on legacy 32bit only userspace > * __u64 - on mixed 32/64bit userspace where all processes use the same > interface. > > This change also increments the BINDER_CURRENT_PROTOCOL_VERSION to 8 and > hooks the compat_ioctl entry for the mixed 32/64bit Android userspace. >
It only increments the version to 8 if the old 32 bit interface is not selected. > This patch also provides a CONFIG_ANDROID_BINDER_IPC_32BIT option for > compatability, which if set which enables the old protocol on 32 bit > systems. > > Please note that all 64bit kernels will use the 64bit Binder ABI. > -- Arve Hjønnevåg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
