Le 03/10/2018 à 07:41, Nicholas Piggin a écrit :
On Mon, 1 Oct 2018 12:30:27 +0000 (UTC)
Christophe Leroy <christophe.le...@c-s.fr> wrote:
The table of pointers 'current_set' has been used for retrieving
the stack and current. They used to be thread_info pointers as
they were pointing to the stack and current was taken from the
'task' field of the thread_info.
Now, the pointers of 'current_set' table are now both pointers
to task_struct and pointers to thread_info.
As they are used to get current, and the stack pointer is
retrieved from current's stack field, this patch changes
their type to task_struct, and renames secondary_ti to
secondary_current.
I'm not sure if current_set is actually needed is it? Because
64-bit already initializes paca->ksave / PACAKSAVE. That might
be a cleanup to do after your series.
head_64.S contains:
__secondary_start:
/* Set thread priority to MEDIUM */
HMT_MEDIUM
/* Initialize the kernel stack */
LOAD_REG_ADDR(r3, current_set)
sldi r28,r24,3 /* get current_set[cpu#] */
ldx r14,r3,r28
addi r14,r14,THREAD_SIZE-STACK_FRAME_OVERHEAD
std r14,PACAKSAVE(r13)
32-bit doesn't seem to use it, it only uses secondary_ti it seems.
Reviewed-by: Nicholas Piggin <npig...@gmail.com>
Christophe
