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<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006>First, you must make sure if it really happen
at watchdog timer exception.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006>if it is, you need select one suitable way to fix
it.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006>Second, I don't believe the sync-isync instructions
make it happen.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006>you can try the 2.6, I don't know if 2.6 kernel
can resolve your problem.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=宋体 color=#0000ff size=2><SPAN
class=878551906-21092006>-Dave</SPAN></FONT></DIV><FONT face=宋体 color=#0000ff
size=2></FONT><BR>
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<DIV>Dave, watchdog timeout is around one second and no cpu activity for
that long is something wrong. Is it ok to disable it to hide the problem lying
somewhere else? Do you think it can be because of sync-isync
instructions and moving to 2.6 might resolve it?</DIV>
<DIV><BR> </DIV>
<DIV><SPAN class=gmail_quote>On 9/20/06, <B class=gmail_sendername>Liu
Dave-r63238</B> <<A
href="mailto:DaveLiu@freescale.com">DaveLiu@freescale.com</A>>
wrote:</SPAN>
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<DIV><SPAN class=q><FONT face=宋体 color=#0000ff size=2></FONT><FONT face=宋体
color=#0000ff size=2></FONT>
<DIV dir=ltr align=left><BR>No MSR is 00029030 and user mode bit is not set
here.<BR><BR>I had missed it in the prev mail:<BR><BR>NIP: C0005DA4 XER:
20000000 LR: C0004FE4 SP: C01F3000 REGS: c01eff30 TRAP:
1020 Not tainted <BR>MSR: 00029030 EE: 1 PR: 0 FP: 0 ME: 1
IR/DR: 11 <BR>TASK = c01f1080[0] 'swapper' Last syscall: 120<BR>last math
00000000 last altivec 00000000<BR>PLB0: bear= 0x08000000 acr=
0xbb000000 besr= 0x00000000<BR><SPAN><FONT face=宋体 color=#0000ff
size=2> </FONT></SPAN></DIV></SPAN>
<DIV dir=ltr align=left><SPAN><FONT face=宋体 color=#0000ff size=2>Dave>I
notice that MSR and TRAP, MSR is 00029030- the critical
interrupt enable.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=宋体 color=#0000ff
size=2>Dave>TRAP is 1020. --WatchDog timer exception is
happening</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=宋体 color=#0000ff size=2>Dave>You
can disable the MSR[CE] bit to no critical exception or disable the WD
timer</FONT></SPAN></DIV><SPAN class=q>
<DIV dir=ltr align=left><BR> </DIV>
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<DIV><SPAN class=gmail_quote>On 9/20/06, <B class=gmail_sendername>Linas
Vepstas</B> <<A onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:linas@austin.ibm.com" target=_blank>linas@austin.ibm.com
</A>> wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">On
Thu, Sep 21, 2006 at 08:38:13AM +1000, Benjamin Herrenschmidt
wrote:<BR>> On Wed, 2006-09-20 at 15:31 -0700, Manoj Sharma wrote:
<BR>> > This is the stack trace.<BR>> ><BR>> >
Registers:<BR>> > GPR00: 00069030 <BR><BR>This is the MSR and it
has the user-mode bit set, which is surely wrong.<BR>This is not how one
gets to user space. <BR><BR>00048000<BR><BR>The MSR had this or'ed into
it, which is setting the user-mode bit.<BR>Surely that's wrong.
<BR><BR>--linas<BR></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></SPAN></DIV></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></BODY></HTML>