Commit 3bbd2343 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman

powerpc/8xx: set STACK_END_MAGIC earlier on the init_stack

Today, the STACK_END_MAGIC is set on init_stack in start_kernel().

To avoid a false 'Thread overran stack, or stack corrupted' message
on early Oopses, setup STACK_END_MAGIC as soon as possible.
Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/54f67bb7ac486c1350f2fa8905cd279f94b9dfb1.1566382841.git.christophe.leroy@c-s.fr
parent a0456574
...@@ -15,6 +15,7 @@ ...@@ -15,6 +15,7 @@
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/magic.h>
#include <asm/processor.h> #include <asm/processor.h>
#include <asm/page.h> #include <asm/page.h>
#include <asm/mmu.h> #include <asm/mmu.h>
...@@ -717,6 +718,9 @@ start_here: ...@@ -717,6 +718,9 @@ start_here:
/* stack */ /* stack */
lis r1,init_thread_union@ha lis r1,init_thread_union@ha
addi r1,r1,init_thread_union@l addi r1,r1,init_thread_union@l
lis r0, STACK_END_MAGIC@h
ori r0, r0, STACK_END_MAGIC@l
stw r0, 0(r1)
li r0,0 li r0,0
stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1) stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment