debug console display problem

debug console display problem

[杜雨阳]

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Dear Xen developers,
 
My very first guest kernel is:

void start_kernel(start_info_t * start_info)
{
        HYPERVISOR_console_io(CONSOLEIO_write,12,"Hello World\n");
        while(1);
}

My Xen hypervisor is the latest xen-3.3.0, however, I never get the message: Hello World.

How can I get this? Please give me complete setup.

Crave for your help.

Shawn

2008-09-06 



杜雨阳 

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Re: debug console display problem

[Christopher Head]

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Hash: SHA1

Provide these command-line options:

loglvl=all guest_loglvl=all console_to_ring

in your bootloader to the Xen hypervisor. The message will then appear
in xm dmesg.

Chris

杜雨阳 wrote:
| Dear Xen developers,
|
| My very first guest kernel is:
|
| void start_kernel(start_info_t * start_info)
| {
|         HYPERVISOR_console_io(CONSOLEIO_write,12,"Hello World\n");
|         while(1);
| }
|
| My Xen hypervisor is the latest xen-3.3.0, however, I never get the
| message: Hello World.
|
| How can I get this? Please give me complete setup.
|
| Crave for your help.
|
| Shawn
|
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Re: debug console display problem

[Keir Fraser]

Also you need a debug build (debug=y make) of Xen. Guests (anything other
than dom0) are supposed to talk to xenconsoled in dom0, but a debug build
makes allowances for guest OS development.

 -- Keir

On 6/9/08 17:20, "Christopher Head" <chead@cs.ubc.ca> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Provide these command-line options:
> 
> loglvl=all guest_loglvl=all console_to_ring
> 
> in your bootloader to the Xen hypervisor. The message will then appear
> in xm dmesg.
> 
> Chris
> 
> 杜雨阳 wrote:
> | Dear Xen developers,
> |
> | My very first guest kernel is:
> |
> | void start_kernel(start_info_t * start_info)
> | {
> |         HYPERVISOR_console_io(CONSOLEIO_write,12,"Hello World\n");
> |         while(1);
> | }
> |
> | My Xen hypervisor is the latest xen-3.3.0, however, I never get the
> | message: Hello World.
> |
> | How can I get this? Please give me complete setup.
> |
> | Crave for your help.
> |
> | Shawn
> |
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.9 (GNU/Linux)
> Comment: GnuPT 2.7.2
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> 
> iEYEARECAAYFAkjCrcYACgkQiD2svb/jCb70lACffodUe0+AC94Qgi1kAVwJFVFC
> AWIAn0jEwNtFJnz/E/wJNM5QEhQ00r93
> =8U+h
> -----END PGP SIGNATURE-----
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
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