On 10/9/23 08:14, Michael Ellerman wrote:
Eddie James <eaja...@linux.ibm.com> writes:
Hi,
I'm attempting to run linux 6.1 on my FSP2, but my kernel crashes
attempting to get into userspace. The init script works, but the first
binary (mount) I run results in oops. Can anyone help me to debug this
further or suggest anything?
Hi Eddie,
It looks like breakage in syscall_exit_finish.
Can you test this? Patch is against v6.1.
That worked! Perfect. Thank you very much! Will you send it upstream?
Thanks,
Eddie
cheers
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 3fc7c9886bb7..decd2594fb9c 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -135,7 +135,8 @@ ret_from_syscall:
lis r4,icache_44x_need_flush@ha
lwz r5,icache_44x_need_flush@l(r4)
cmplwi cr0,r5,0
- bne- 2f
+ bne- .L44x_icache_flush
+.L44x_icache_flush_return:
#endif /* CONFIG_PPC_47x */
kuep_unlock
lwz r4,_LINK(r1)
@@ -170,10 +171,11 @@ syscall_exit_finish:
b 1b
#ifdef CONFIG_44x
-2: li r7,0
+.L44x_icache_flush:
+ li r7,0
iccci r0,r0
stw r7,icache_44x_need_flush@l(r4)
- b 1b
+ b .L44x_icache_flush_return
#endif /* CONFIG_44x */
.globl ret_from_fork
