Commit
d300627c6a536 ("powerpc/6xx: Handle DABR match before calling
do_page_fault") breaks non 6xx platforms.
Failed to execute /init (error -14)
Starting init: /bin/sh exists but couldn't execute it (error -14)
Kernel panic - not syncing: No working init found. Try passing init= ...
CPU: 0 PID: 1 Comm: init Not tainted 4.13.0-rc3-s3k-dev-00143-g7aa62e972a56 #56
Call Trace:
panic+0x108/0x250 (unreliable)
rootfs_mount+0x0/0x58
ret_from_kernel_thread+0x5c/0x64
Rebooting in 180 seconds..
This is because in handle_page_fault(), the call to do_page_fault() has been
mistakenly enclosed inside an #ifdef CONFIG_6xx
Fixes:
d300627c6a536 ("powerpc/6xx: Handle DABR match before calling do_page_fault")
Brown-paper-bag-to-be-worn-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
handle_page_fault:
stw r4,_DAR(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
- andis. r0,r5,DSISR_DABRMATCH@h
#ifdef CONFIG_6xx
+ andis. r0,r5,DSISR_DABRMATCH@h
bne- handle_dabr_fault
- bl do_page_fault
#endif
+ bl do_page_fault
cmpwi r3,0
beq+ ret_from_except
SAVE_NVGPRS(r1)