Hi,
I looked a little further into the problems I see on my
SS20 with hypersparc cpus. I got things like
Linux version 2.6.33-02580-g79da01d ...
...
Freeing unused kernel memory: 132k freed
Kernel panic - not syncing: Attempted to kill init!
[f00320f4 : do_group_exit+0x28/0xb4 ]
[f003c5a0 : get_signal_to_deliver+0x258/0x368 ]
[f00125b4 : do_signal+0x34/0x8cc ]
[f0013350 : do_notify_resume+0x2c/0x3c]
[f000fcec : signal_p+0x14/0x24 ]
[f000ee44 : srmmu_fault+0x58/0x68 ]
Press Stop-A (L1-A) to return to the boot prom
INFO: RCU detected CPU 0 stall (t=2500 jiffies)
INFO: RCU detected CPU 0 stall (t=10000 jiffies)
INFO: RCU detected CPU 0 stall (t=17500 jiffies)
...
I could actually bisect it down to this:
commit 4d14a459857bd151ecbd14bcd37b4628da00792b
Author: David S. Miller <davem@xxxxxxxxxxxxx>
Date: Thu Dec 10 23:32:10 2009 -0800
sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}()
This mirrors commit ff60fab71bb3b4fdbf8caf57ff3739ffd0887396
(x86: Use __builtin_memset and __builtin_memcpy for memset/memcpy)
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
:040000 040000 3023748f5a1b5a02502e918352ecbe750c2323f7
e455c22b275b41621281f0423e1e3a312552968c M arch
Prior to this commit, INIT does not segfault and the SS20 run's UP and SMP too.
I'll try to revert this commit on current sparc.git later.
Linux ross 2.6.32-03939-gfb34035 #28 SMP Wed May 30 01:13:55 CEST 2012
sparc sun4m ROSS HyperSparc RT625 or RT626 GNU/Linux
cpu : ROSS HyperSparc RT625 or RT626
fpu : ROSS HyperSparc combined IU/FPU
promlib : Version 3 Revision 2
prom : 2.25
type : sun4m
ncpus probed : 4
ncpus active : 4
Cpu0Bogo : 124.92
Cpu1Bogo : 125.18
Cpu2Bogo : 109.31
Cpu3Bogo : 109.31
MMU type : ROSS HyperSparc
contexts : 4096
nocache total : 5242880
nocache used : 238592
State:
CPU0 : online
CPU1 : online
CPU2 : online
CPU3 : online
Thanks,
M
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