Commit b4674788 authored Nov 03, 2016 by Mark Rutland Committed by Zubin Mithra Aug 09, 2017

UPSTREAM: arm64: thread_info remove stale items



We have a comment claiming __switch_to() cares about where cpu_context
is located relative to cpu_domain in thread_info. However arm64 has
never had a thread_info::cpu_domain field, and neither __switch_to nor
cpu_switch_to care where the cpu_context field is relative to others.

Additionally, the init_thread_info alias is never used anywhere in the
kernel, and will shortly become problematic when thread_info is moved
into task_struct.

This patch removes both.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Bug: 38331309
Change-Id: Ia4769ddcc6fc556e9eb6193d64fc99fe2d9e39ab
(cherry picked from commit dcbe02855f048fdf1e13ebc697e83c8d297f9f5a)
Signed-off-by: Zubin Mithra <zsm@google.com>

parent f2b8210f

arch/arm64/include/asm/thread_info.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -42,7 +42,6 @@ typedef unsigned long mm_segment_t;

		/*
		* low level task data that entry.S needs immediate access to.
		* __switch_to() assumes cpu_context follows immediately after cpu_domain.
		*/
		struct thread_info {
		unsigned long flags; /* low level flags */
		@@ -63,7 +62,6 @@ struct thread_info {
		.addr_limit = KERNEL_DS, \
		}

		#define init_thread_info (init_thread_union.thread_info)
		#define init_stack (init_thread_union.stack)

		/*