Re: xen 3.1 problem (Re: xen 3.1.0 is there)

   On Jun 19, 14:38, Manuel Bouyer wrote:
   > Subject: Re: xen 3.1 problem (Re: xen 3.1.0 is
there)
   >
   > This looks a lot like the bug I fixed in dom0
support recently. You need a
   > very recent current or 4.0 kernel for xen3.1  dom0
(newer than
   > 2007/06/13 10:38:44, which is the time when the bug
fix was pulled up to
   > netbsd-4).

Thanks.  I was confused which is the current kernel while
working between
two machines.  My bad.  When I used correctly recent
2007/06/15 kernel,
NetBSD DomU works good with xen3.1.


However, I'm having read_psl problem now.  hehe.  It is very
similar
problem I reported at May 26th.  At that time, I just
rollbacked my
netbsd to Apr 30th.  This time, I need the recent kernel for
Xen 3.1,
so working to find the source of problem.

Last time, I was having problem when I try to run WinXP. 
However,
this time I'm having from both Dom0 while trying to run
WinXP and NetBSD
DomU while operating DomU.  Here is a trace from db.


panic(c0413ef4,c03dc1ab,c03ed550,c040f720,88d) at
netbsd:panic+0x155
__assert(c03dc1ab,c040f720,88d,c03ed550,20) at
netbsd:__assert+0x2e
pmap_load(c02edf06,cba2cb14,bfbfe614,4,14) at
netbsd:pmap_load+0x31b
copyout(cb9bc7e0,cba2cc68,100,bfbfe614,bfbfe5f4) at
netbsd:copyout+0xe
sys_select(cb9bc7e0,cba2cc48,cba2cc68,80c8f80,11) at
netbsd:sys_select+0x69
syscall_plain() at netbsd:syscall_plain+0xb9
--- syscall (number 93) ---
0xbbaf7f4f:
db> reboot
syncing disks... panic: kernel diagnostic assertion
"read_psl() == 0" failed: fi
le
"/mnt/raid/netbsd/current/src/sys/arch/xen/i386/pmap.c&
quot;, line 2189
Stopped in pid 305.1 (screen-4.0.3) at 
netbsd:cpu_Debugger+0x4:        popl
%
ebp
db> 

Now, I'm trying to find the modified source codes causing
this problem
between 4/30 and 5/20.  I'll be back if I find something.

-- Kazushi

On Wed, Jun 20, 2007 at 12:17:45AM +0900, Kazushi Marukawa
wrote:
>    On Jun 19, 14:38, Manuel Bouyer wrote:
>    > Subject: Re: xen 3.1 problem (Re: xen 3.1.0 is
there)
>    >
>    > This looks a lot like the bug I fixed in dom0
support recently. You need a
>    > very recent current or 4.0 kernel for xen3.1 
dom0 (newer than
>    > 2007/06/13 10:38:44, which is the time when the
bug fix was pulled up to
>    > netbsd-4).
> 
> Thanks.  I was confused which is the current kernel
while working between
> two machines.  My bad.  When I used correctly recent
2007/06/15 kernel,
> NetBSD DomU works good with xen3.1.
> 
> 
> However, I'm having read_psl problem now.  hehe.  It is
very similar
> problem I reported at May 26th.  At that time, I just
rollbacked my
> netbsd to Apr 30th.  This time, I need the recent
kernel for Xen 3.1,
> so working to find the source of problem.
> 
> Last time, I was having problem when I try to run
WinXP.  However,
> this time I'm having from both Dom0 while trying to run
WinXP and NetBSD
> DomU while operating DomU.  Here is a trace from db.
> 
> 
> panic(c0413ef4,c03dc1ab,c03ed550,c040f720,88d) at
netbsd:panic+0x155
> __assert(c03dc1ab,c040f720,88d,c03ed550,20) at
netbsd:__assert+0x2e
> pmap_load(c02edf06,cba2cb14,bfbfe614,4,14) at
netbsd:pmap_load+0x31b
> copyout(cb9bc7e0,cba2cc68,100,bfbfe614,bfbfe5f4) at
netbsd:copyout+0xe
> sys_select(cb9bc7e0,cba2cc48,cba2cc68,80c8f80,11) at
netbsd:sys_select+0x69
> syscall_plain() at netbsd:syscall_plain+0xb9
> --- syscall (number 93) ---
> 0xbbaf7f4f:
> db> reboot
> syncing disks... panic: kernel diagnostic assertion
"read_psl() == 0" failed: fi
> le
"/mnt/raid/netbsd/current/src/sys/arch/xen/i386/pmap.c&
quot;, line 2189
> Stopped in pid 305.1 (screen-4.0.3) at 
netbsd:cpu_Debugger+0x4:        popl
> %
> ebp
> db> 
> 
> Now, I'm trying to find the modified source codes
causing this problem
> between 4/30 and 5/20.  I'll be back if I find
something.

Is the first panic() also a "read_psl() == 0" one
?
This would mean something disabled interrupts between
copyout() and
pmap_load() and failed to reenable them, but I didn't find
anything obvious.
copyout() itself doesn't call pmap_load() so there's
probably a trap in
between that isn't shown by ddb.

-- 
Manuel Bouyer <bouyerantioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la
difference
--