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David Howells 0500871f21 Construct init thread stack in the linker script rather than by union
Construct the init thread stack in the linker script rather than doing it
by means of a union so that ia64's init_task.c can be got rid of.

The following symbols are then made available from INIT_TASK_DATA() linker
script macro:

	init_thread_union
	init_stack

INIT_TASK_DATA() also expands the region to THREAD_SIZE to accommodate the
size of the init stack.  init_thread_union is given its own section so that
it can be placed into the stack space in the right order.  I'm assuming
that the ia64 ordering is correct and that the task_struct is first and the
thread_info second.

Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2018-01-09 23:21:02 +00:00
..
boot/dts DeviceTree for 4.15: 2017-11-14 18:25:40 -08:00
configs openrisc: add simple_smp dts and defconfig for simulators 2017-11-03 14:01:15 +09:00
include Construct init thread stack in the linker script rather than by union 2018-01-09 23:21:02 +00:00
kernel openrisc: Make THREAD_SIZE available to vmlinux.lds 2018-01-09 23:21:02 +00:00
lib OpenRISC updates for v4.15 2017-11-13 12:12:00 -08:00
mm openrisc: add cacheflush support to fix icache aliasing 2017-11-03 14:01:15 +09:00
Kconfig OpenRISC updates for v4.15 2017-11-13 12:12:00 -08:00
Makefile openrisc: pass endianness info to sparse 2017-11-03 14:01:17 +09:00