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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2017-08-08 08:37:24 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-08 11:35:34 +0200 |
| commit | 64d0a506fbdd64906f168539bee32ac7dcabb521 (patch) | |
| tree | 6882765cb191318e525a7e478dba03c06a61a45f | |
| parent | powerpc/powernv: Enable PCI peer-to-peer (diff) | |
| download | linux-64d0a506fbdd64906f168539bee32ac7dcabb521.tar.xz linux-64d0a506fbdd64906f168539bee32ac7dcabb521.zip | |
powerpc/32: Fix boot failure on non 6xx platforms
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>
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index dff51ea52e49..b14bf7def2e2 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -586,11 +586,11 @@ ppc_swapcontext: 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) |