Re: [PATCH 1/3] kthread: update s390 cmm driver to use kthread

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Quoting Heiko Carstens ([email protected]):
> > AP instructions not installed. 
> > BUG: warning at lib/kref.c:32/kref_get() 
> > 000000000017719a 0000000000000002 0000000000000000 0000000000a03cf0  
> >        0000000000a03c68 000000000037fc2c 000000000037fc2c 0000000000015dfa  
> >        0000000000000000 0000000000000000 000000000043ac30 0000000000000000  
> >        0000000000000000 000000000000000d 0000000000a03c50 0000000000a03cc8  
> >        0000000000362488 0000000000015dfa 0000000000a03c50 0000000000a03ca0  
> > Call Trace: 
> > (Ý<0000000000015d44>¨ show_trace+0x9c/0xb8) 
> >  Ý<0000000000015e18>¨ show_stack+0xb8/0xc8 
> >  Ý<0000000000015e56>¨ dump_stack+0x2e/0x3c 
> >  Ý<0000000000163f70>¨ kref_get+0x50/0x74 
> >  Ý<0000000000162ec6>¨ kobject_get+0x32/0x44 
> >  Ý<0000000000178fd6>¨ get_bus+0x36/0x60 
> >  Ý<0000000000179a12>¨ bus_add_driver+0x3a/0x1f4 
> >  Ý<000000000017ae30>¨ driver_register+0xb0/0xc0 
> >  Ý<000000000021a1fe>¨ ap_driver_register+0x56/0x64 
> >  Ý<00000000004c6ba6>¨ zcrypt_pcicc_init+0x36/0x44 
> >  Ý<000000000001330c>¨ init+0x1bc/0x3a4 
> >  Ý<00000000000184be>¨ kernel_thread_starter+0x6/0xc 
> >  Ý<00000000000184b8>¨ kernel_thread_starter+0x0/0xc 
> 
> This should be fixed with -mm3. In addition you need this one on top of -mm3:
> 
>  arch/s390/kernel/time.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> Index: linux-2.6.18-rc4-mm3/arch/s390/kernel/time.c
> ===================================================================
> --- linux-2.6.18-rc4-mm3.orig/arch/s390/kernel/time.c	2006-08-28 10:32:45.000000000 +0200
> +++ linux-2.6.18-rc4-mm3/arch/s390/kernel/time.c	2006-08-28 10:42:33.000000000 +0200
> @@ -85,7 +85,8 @@
>  {
>  	__u64 now;
>  
> -        now = (get_clock() - jiffies_timer_cc) >> 12;
> +	now = (get_clock() - jiffies_timer_cc) >> 12;
> +	now -= (__u64) jiffies * USECS_PER_JIFFY;
>  	return (unsigned long) now;
>  }

This patch appears to be actually in -mm3 (at least the git tree I just
fetched), and is does boot fine now.

thanks,
-serge
-
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