gmane.linux.kernel.virtualization.lguest

Re: problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

Eviatar Khen — 2012-01-23T18:45:20

Thanks!!!!
It solve it.

On 01/23/2012 01:15 PM, Rusty Russell wrote:

Re: lguest launch hangs on "Marking TSC..."

Rusty Russell — 2012-01-23T11:17:35

Please send kernel config...

Thanks!
Rusty.

Re: problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

Rusty Russell — 2012-01-23T11:15:57

Hmm, CONFIG_OLPC causes problems; it tries to move %cr3 to %eax.

If you have that turned on, try turning it off.

Thanks!
Rusty.

Re: lguest for ARM

Nuno Felicio — 2011-12-06T22:07:01

Hello again,

currently from what i know there is no current site from where you can
download it.
I send the last version that LiMing sent to me, i have also an "demo" vdisk
image that LiMing created also if you want it ( i dont send it now because
it is almost 2Mb)

PS: all credit for this work is to LiMing!! i just reported some
bugs/problems


First apply the patch and the replace page_tables.c and boot.c ( in the
correct arm sub tree)
i send also a demo .config file

All testing as done using armv7 boards, is your hardware an armv7 ?



On Tue, Dec 6, 2011 at 9:53 PM, William Cunningham
<wcunning-nNDzPDmKTdnSiEDVxGk4TQ< at >public.gmane.org>wrote:

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Re: problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

Eviatar Khen — 2012-01-14T14:18:02

I have a similar problem with kernel 3.0.9 compiled for i386 (i5 processor):

lguest: unhandled trap 13 at 0x100062 (0x0).

Something else that is interesting is, that this version (kernel 3.0.9) 
works, as host, with an old guest image (kernel 2.6.35) but not with 
itself as a guest.

I added my config file, just in case it is indeed a configuration problem.

Thank you and best regards,

Eviatar



#
# Automatically generated make config: don't edit
# Linux/i386 3.0.9-lguest2 Kernel Configuration
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_I

Re: problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

Eviatar Khen — 2012-01-14T10:00:05

I have a similar problem with kernel 3.0.9 compiled for i686 (i5 processor):

lguest: unhandled trap 13 at 0x100062 (0x0).

Something else that is interesting is, that this version (kernel 3.0.9) 
works, as host, with an old guest image (kernel 2.6.35) but not with 
itself as a guest.

I attached my config file, just in case it is indeed a configuration 
problem.

Thank you and best regards,

Eviatar


On 01/14/2012 07:57 AM, ron minnich wrote:


#
# Automatically generated make config: don't edit
# Linux/i386 3.0.9-lguest2 Kernel Configuration
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_NEED_DMA_MAP_STATE

lguest launch hangs on "Marking TSC..."

Boris Od — 2011-12-24T10:31:28

Hello all!

I want to add a serial port to lguest as part of a bigger project.

Problem is I can't  even launch it for the past three weeks.

i am using this cmd:

sudo ~/src/linux-2.6.32/Documentation/lguest/lguest 64
~/src/linux-2.6.32/vmlinux --tunnet=192.168.19.1
--block=/home/borod/lg/initrd-1.1-i386.img root=/dev/vda

[    0.000000] Reserving virtual address space above 0xffc00000
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.32.46+drm33.20 (borod< at >borod-laptop) (gcc
version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #1 SMP Wed Dec 14 03:17:21 IST 2011
(Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2)
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
[    0.0000

Lguest on i5

Eugene Kov — 2011-12-16T15:50:03

Hi All,

Until now I used Lguest for research purposes on an intel atom 32bit platform.
Now I want to use it on an i5 machine, which  is  a 64bit platform but the kernel i use (3.0.9) is compiled for  i686. I configured lguest the same as before, but I get

lguest: unhandled trap 13 at 0x100062 (0x0)

when the Launcher process starts.
Does lguest does not work on a 64bit platform although the kernel is 32 bit?
The .config file is attached.
Your help would be much appreciated as it would help my research very much.

Thank you and best regards,

Eugene
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Re: problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

Rusty Russell — 2012-01-16T11:32:38

Hmm, nothing springs to mind.  I just compiled up 3.0 here and tested
it fine (not 3.0.13, but I'm not sure anything has changed).

Please send (off-list) your .config if you haven't solved this already.

Thanks,
Rusty.

problem on 3.0.13: unhandled trap 13 at 0x1371e36 (0x0)

ron minnich — 2012-01-14T05:57:42

OK, it's been a while ... I"ve built lguest on my chromebook. It's an
i686 kernel of course.

The location is at 1371e36 which I realize means nothing but ... it's
in default_entry. It also looks to me like it's long before virtual
addressing is turned on. Things have changed in the kernel in this
particular area so I am not as familiar with it as I was (and soon
will be, again ...)

Could this be some simple screwup on configuration or something I have
to tell lguest somehow?

The command is simple:

lguest 64m vmlinux

I realize I need a root but I want to see it get far enough to
explode. I like fireworks.

thanks for any good hints ...

And, yes, config is set as in the doc, with CONFIG_PARAVIRT=y,
CONFIG_LGUEST_GUEST=y, ..EXPERIMENTAL=y, HIGHMEM64G=n, and so on.

I think I'm doing something dumb, just not sure what ... memory fails me.

thanks

ron

Re: [PATCH] lguest: Make sure the interrupt is allocatedcorrectly by

Rusty Russell — 2011-12-20T02:53:10

Oops, this got placed on my TODO list and then lost.  Sorry.

It will go into the next merge window.

Here is the cleanup I applied on top of your patch, after figuring out
what's going on.

1) Don't mention CONFIG_SPARSE_IRQ, it's always on for x86 now.
2) Note that we explictly ignore -EEXIST, since the boot code reserves
   low irqs.
3) Make lguest_setup_irq() return an error only on *unexpected* error.
4) Correct undo path.

Thanks!
Rusty.

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
< at >< at > -856,20 +856,23 < at >< at > static void __init lguest_init_IRQ(void)
 }
 
 /*
- * With CONFIG_SPARSE_IRQ, interrupt descriptors are allocated as-needed, so
- * rather than set them in lguest_init_IRQ we are called here every time an
- * lguest device needs an interrupt.
+ * Interrupt descriptors are allocated as-needed, but low-numbered ones are
+ * reserved by the generic x86 code.  So we ignore irq_alloc_desc_at if it
+ * tells us the irq is already used

Re: lguest for ARM

LiMing — 2011-12-11T16:26:31

You can download the latest patch from http://sourceforge.net/projects/armlguest/

Mingli

From: wcunning-nNDzPDmKTdnSiEDVxGk4TQ< at >public.gmane.org
Date: Mon, 5 Dec 2011 10:38:58 -0500
Subject: Re: [Lguest] lguest for ARM
To: myfavor_linux-uAjRD0nVeow< at >public.gmane.org
CC: lguest-uLR06cmDAlY/bJ5BZ2RsiQ< at >public.gmane.org; jpaupore-63aXycvo3TyHXe+LvDLADg< at >public.gmane.org

It would appear that the /rusty/linux-2.6.git repository was never restored after the kernel.org failure, and I was unable to find that particular repo, or any other kernel repo containing that branch in Rusty's public github/gitorious/whatever repos. Does someone still have a copy that could get reposted somewhere?

Thanks,
William

2011/12/5 LiMing <myfavor_linux-uAjRD0nVeow< at >public.gmane.org>

Hi,

Try this one first
git clone git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6.git

git checkout arm-lguest

if it cannot work, let me know, I will send you the source code.

Mingli
From: wcunning-nNDzPDmKTdnSiEDVxGk4TQ< at >public.

Re: Lguest on x86_64

Avi Kivity — 2011-12-11T15:24:55

Lguest will be slower than any of these on modern hardware, except for
trivial (pure compute) workloads.

Re: Lguest on x86_64

Enrico Weigelt — 2011-12-07T04:01:49


Indeed, I'm *very* interested in it.

I'm working heavily with virtual machines and containers,
and I'm looking for an efficient midway between full
virtualization (kvm, vmware, etc) and containers.
Lguest would be quite optimal for this.


cu

Re: lguest for ARM

Nuno Felicio — 2011-12-06T22:22:10

Good hardware :)

There was one lasting bug very difficult to reproduce , i think that LiMing
never seen it on is hardware, sometimes the virtual machine, locks hard
after heavy work, i have run several testes including "kernel compile" /
heavy writing/reading tests and never caught it.
But when i was beginning to be confident it was ready for "production"
experimental tests it would fail :( grrrrrrrr

Because your hardware is true multithread( dual core) if the problem is a
race... you will mostly sure find it :)

Good Luck!!!

Nuno

PS: If you find the problem please share ;)  (my hardware is an OMAP3 )



On Tue, Dec 6, 2011 at 10:08 PM, William Cunningham <wcunning-nNDzPDmKTdnSiEDVxGk4TQ< at >public.gmane.org

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Re: lguest for ARM

William Cunningham — 2011-12-06T22:08:24

We're working with the Pandaboard, which is ARM v7 (Cortex A9).

Thanks,
William

On Tue, Dec 6, 2011 at 5:07 PM, Nuno Felicio <nuno.felicio-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

Re: lguest for ARM

William Cunningham — 2011-12-06T21:53:35

Where do I get the updated version of the patch?

Thanks,
William

On Tue, Dec 6, 2011 at 4:52 PM, Nuno Felicio <nuno.felicio-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

Re: lguest for ARM

Nuno Felicio — 2011-12-06T21:52:06

hello,

LiMing  have corrected several problems in the original patch, and the
current status is "almost" rock solid :), don't use the original patch!

BR

Nuno Felicio

Tue, Dec 6, 2011 at 12:09 PM, Rusty Russell <rusty-8n+1lVoiYb80n/F98K4Iww< at >public.gmane.org> wrote:

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Re: lguest for ARM

Rusty Russell — 2011-12-06T12:09:03

Well, here's the patch which LiMing sent me, which was what I applied to
make the git tree.  It was never properly cleaned up, though if you're
interested that would be a superb thing to do!

Cheers,
Rusty.
PS. Sorry for the attachme,t; it's rather big.

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Re: lguest for ARM

William Cunningham — 2011-12-05T15:38:58

It would appear that the /rusty/linux-2.6.git repository was never restored
after the kernel.org failure, and I was unable to find that particular
repo, or any other kernel repo containing that branch in Rusty's public
github/gitorious/whatever repos. Does someone still have a copy that could
get reposted somewhere?

Thanks,
William

2011/12/5 LiMing <myfavor_linux-uAjRD0nVeow< at >public.gmane.org>

Re: lguest for ARM

LiMing — 2011-12-05T12:14:39

Hi,

Try this one first
git clone git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6.git
git checkout arm-lguest

if it cannot work, let me know, I will send you the source code.

Mingli
From: wcunning-nNDzPDmKTdnSiEDVxGk4TQ< at >public.gmane.org
Date: Mon, 28 Nov 2011 00:47:13 -0500
To: lguest-uLR06cmDAlY/bJ5BZ2RsiQ< at >public.gmane.org
CC: jpaupore-63aXycvo3TyHXe+LvDLADg< at >public.gmane.org
Subject: [Lguest] lguest for ARM

I cannot seem to find the original lguest for ARM branch in the current working lguest tree (which as far as I can tell, should be Rusty's tree on kernel.org or github). It would appear that this branch was not moved over following the kernel.org breach. Am I right in assuming that this was the failure and where can I find a copy of the code for that?



Thanks,
William Cunningham
Junior, Computer Engineering
University of Michigan



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