* Re: [9fans] kernel debug - how
@ 2003-03-01 3:41 Christopher Nielsen
0 siblings, 0 replies; 3+ messages in thread
From: Christopher Nielsen @ 2003-03-01 3:41 UTC (permalink / raw)
To: 9fans
> You can debug the kernel with acid -k but there
> is no way to write to kernel memory.
>
> However, you can set that variable by doing
>
> echo debug >/dev/fd0ctl
>
> (There is no way to change it back to zero
> after that, which is itself a bug.)
Here's a patch that adds a command to disable debugging
for the floppy driver.
121a122
> CMnodebug,
129a131
> CMnodebug, "nodebug", 1,
475a478,480
> break;
> case CMnodebug:
> floppydebug = 0;
--
Christopher Nielsen
"They who can give up essential liberty for temporary
safety, deserve neither liberty nor safety." --Benjamin Franklin
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] kernel debug - how
2003-02-26 14:22 Steve Simon
@ 2003-02-26 14:34 ` Russ Cox
0 siblings, 0 replies; 3+ messages in thread
From: Russ Cox @ 2003-02-26 14:34 UTC (permalink / raw)
To: 9fans
You can debug the kernel with acid -k but there
is no way to write to kernel memory.
However, you can set that variable by doing
echo debug >/dev/fd0ctl
(There is no way to change it back to zero
after that, which is itself a bug.)
Russ
^ permalink raw reply [flat|nested] 3+ messages in thread
* [9fans] kernel debug - how
@ 2003-02-26 14:22 Steve Simon
2003-02-26 14:34 ` Russ Cox
0 siblings, 1 reply; 3+ messages in thread
From: Steve Simon @ 2003-02-26 14:22 UTC (permalink / raw)
To: 9fans
Hi
How do I debug the kernel?
All I want to do is enable floppydebug in a running kernel.
/sys/src/9/pc/devfloppy.c:42 int floppydebug = 0;
-Steve
^ permalink raw reply [flat|nested] 3+ messages in thread
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