RE: [Xen-ia64-devel] Paravirtualized xenlinux/ia64 available

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

So finally it works now on ski simulator, after simply "bk pull" latest
xenlinux. I suspected that the config file may be the problem
previously. Anyway, thanks for help.

- Kevin

>-----Original Message-----
>From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
>[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tian,
Kevin
>Sent: Tuesday, May 17, 2005 9:02 AM
>To: Magenheimer, Dan (HP Labs Fort Collins);
xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>Cc: Munoz, Alberto J
>Subject: RE: [Xen-ia64-devel] Paravirtualized xenlinux/ia64 available
>
>Hi, Dan,
>       Thanks for looking at it.
>
>       I use the same command line as you except missing
>"console=simcons". For root file system, same simulated file still
works
>for previous xenlinux version. Anyway, since you can do it well, it
>should be only an environmental problem. I'll try to download sda once
>again, and pull the latest change you made to para-linux... Then let
you
>know what happens.
>
>Thanks,
>Kevin
>
>>-----Original Message-----
>>From: Magenheimer, Dan (HP Labs Fort Collins)
>[mailto:dan.magenheimer@xxxxxx]
>>Sent: Tuesday, May 17, 2005 1:48 AM
>>To: Tian, Kevin; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>>Cc: Munoz, Alberto J
>>Subject: RE: [Xen-ia64-devel] Paravirtualized xenlinux/ia64 available
>>
>>After working around the same problems you saw (thanks for
>>finding them... it saved me some time!), I got a successful
>>boot on ski all the way to a login prompt.
>>
>>I suspect one of two problems:
>>
>>1) Different command line?  I use:
>>
>>ski bootloader xen skilinux nomca console=simcons simscsi=/var/xen/sd
>>
>>Note that there is no "a" on the end of /var/xen/sd even though
>>the filename has one.
>>
>>2) Missing simulated root file system?  I use:
>>
>>http://www.hpl.hp.com/research/linux/ski/get.php?file=sda.gz
>>
>>and unpack it and place it at /var/xen/sda.  There is
>>also a Debian version if you prefer.  See Auxiliary files at:
>>
>>http://www.hpl.hp.com/research/linux/ski/download.php
>>
>>Let me know if that helps.
>>
>>Dan
>>
>>> -----Original Message-----
>>> From: Tian, Kevin [mailto:kevin.tian@xxxxxxxxx]
>>> Sent: Sunday, May 15, 2005 11:33 PM
>>> To: Magenheimer, Dan (HP Labs Fort Collins);
>>> xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>>> Cc: Munoz, Alberto J
>>> Subject: RE: [Xen-ia64-devel] Paravirtualized xenlinux/ia64
available
>>>
>>> Hi, Dan,
>>>     It still doesn't work, and could you give more detail
>>> instructions about steps to run on ski simulator and real hardware.
>>>
>>>     Are the steps you described upon zx1_defconfig only
>>> adapts to zx1 machine, or also works for ski? If only for zx1
>>> machine, why need to add hpsim_cons like stuff for
>>> CONFIG_XEN? If also for ski, I always encountered "Can't open
>>> root device" problem.
>>>
>>>     I also tried to copy sim_defconfig, and there's no
>>> output after "Freeing unused kernel memory: 192kB freed" but
>>> the keyboard can work. Before reaching this point, at least I
>>> need to change something for para-xenlinux:
>>>     1. Comment following line in arch/ia64/Makefile:
>>>             #drivers-$(CONFIG_XEN)          += arch/ia64/hp/sim/
>>>             Or else the compilation will fail due to double
>>> inclusion
>>>     2. Comment arch/ia64/kernel/setup.c:
>>> static inline int __init
>>> early_console_setup (char *cmdline)
>>> {
>>> #if 0
>>> //#ifdef CONFIG_XEN
>>>         extern struct console hpsim_cons;
>>>         register_console(&hpsim_cons);
>>>         return 0;
>>> #else
>>>     Or else the hpsim_cons is registered twice and then
>>> xenlinux will search console list and output same string
>>> repeatedly for ever:
>>> Linux version 2.6.11 (gcc version 3.2.3 20030502 (Red Hat
>>> Linux 3.2.3-20)) #7 SMP Sun May 15 18:30:58 PDT 2005
>>>
>>>     But after all above done, it still can't reach user
>>> prompt. Since I'm not familiar with ski simulator
>>> environment, could you give a step-by-step instruction for
>>> run on ski? :)
>>>
>>> Thanks a lot,
>>> Kevin
>>> >-----Original Message-----
>>> >From: Magenheimer, Dan (HP Labs Fort Collins)
>>> [mailto:dan.magenheimer@xxxxxx]
>>> >Sent: Friday, May 13, 2005 9:07 PM
>>> >To: Tian, Kevin; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; xen-devel
>>> >Cc: Munoz, Alberto J
>>> >Subject: RE: [Xen-ia64-devel] Paravirtualized xenlinux/ia64
>available
>>> >
>>> >Yes, like real Linux/ia64, it is not possible to run the
>>> >same Xenlinux bits both on ski and on real hardware.
>>> >A different configuration and build is required.  The
>>> >config difference is the same as it was with the
>>> >privified xenlinux... I think you did that successfully
>>> >before (with privified xenlinux) so give that config
>>> >file a try and if it doesn't work, let me know.
>>> >
>>> >BTW, I think I know how to fix this problem (unable
>>> >to run same bits on ski and real hardware) for real
>>> >Linux/ia64 and Xen/ia64, but it would take a day or
>>> >two and hasn't bubbled up to the top of my list yet.
>>> >
>>> >Dan
>>> >
>>> >P.S. Please move further replies on this topic
>>> >to xen-ia64-devel only.
>>> >
>>> >> -----Original Message-----
>>> >> From: Tian, Kevin [mailto:kevin.tian@xxxxxxxxx]
>>> >> Sent: Friday, May 13, 2005 2:35 AM
>>> >> To: Magenheimer, Dan (HP Labs Fort Collins);
>>> >> xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; xen-devel
>>> >> Cc: Munoz, Alberto J
>>> >> Subject: RE: [Xen-ia64-devel] Paravirtualized
>>> xenlinux/ia64 available
>>> >>
>>> >> Hi, Dan,
>>> >>  We tried latest xeno-unstable-ia64 bk tree on a para-virtualized
>>> >> dom0 following your instructions. However it failed to
>>> find root fs on
>>> >> ski:
>>> >>
>>> >> VFS: Cannot open root device "<NULL>" or unknown-block(8,2)
>>> >> Please append a correct "root=" boot option
>>> >> Kernel panic - not syncing: VFS: Unable to mount root fs on
>>> >> unknown-block(8,2)
>>> >>
>>> >>  The bk info is:
>>> >>   ChangeSet@xxxxxx, 2005-05-10 15:58:27-07:00,
>>> xen-ia64.adm@xxxxxxxxxx
>>> >>   Merge bk://xen.bkbits.net/xeno-unstable.bk
>>> >>   into  bkbits.net:/repos/x/xen-ia64/xeno-unstable-ia64.bk
>>> >>
>>> >>  However we then tried previous binary-patched dom0 with code in
>>> >> our trunk (VTI disabled), it can work to user prompt. This
>>> >> means the ski
>>> >> environment still working well.
>>> >>
>>> >>  Do you ever see similar error on this revision? Maybe we missed
>>> >> some important step or... ski environment needs some change?
>>> >> The command
>>> >> to start ski is:
>>> >>     "ski bootloader xen paralinux nomca simscsi=`pwd`/sd"
>>> >>
>>> >>  Here paralinux is built upon
>>> >> bk://xen-ia64.bkbits.net/xenlinux-ia64-2.6.11.bk.
>>> >>
>>> >>  BTW, just saw a small bug in vcpu.c:
>>> >> IA64FAULT vcpu_itc_d(VCPU *vcpu, UINT64
>>> >>          ...
>>> >>        if (((itir & ~0xfc) >> 2) < PAGE_SHIFT) {
>>> >> Should be:
>>> >>        if (((itir & 0xfc) >> 2) < PAGE_SHIFT) {
>>> >>
>>> >> Thanks,
>>> >> Kevin
>>> >> >-----Original Message-----
>>> >> >From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
>>> >> >[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
>>> >> Magenheimer,
>>> >> >Dan (HP Labs Fort Collins)
>>> >> >Sent: Thursday, May 05, 2005 4:56 AM
>>> >> >To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; xen-devel
>>> >> >Cc: Munoz, Alberto J
>>> >> >Subject: [Xen-ia64-devel] Paravirtualized xenlinux/ia64
available
>>> >> >
>>> >>
>>>
>
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