CONFIG_MAGIC_SYSRQ on i386 unavailable?

CONFIG_MAGIC_SYSRQ on i386 unavailable?

[Jeremy Brand]

Hi all,

In the latest 2.4 and 2.6 kernels, Documentation/sysrq.txt seems to
still mention that MAGIC SYSRQ is still available, however I can not
find it in the configuration.  When I add CONFIG_MAGIC_SYSRQ to
.config and run oldconfig, it vanishes.

What is the prefered method of enabling magic sysrq on i386?  That was
a really nice feature.  I hope it has not been removed.

Thanks,
Jeremy

Re: CONFIG_MAGIC_SYSRQ on i386 unavailable?

[Randy.Dunlap]

On Tue, 31 Aug 2004 13:25:19 -0700 Jeremy Brand wrote:

| Hi all,
| 
| In the latest 2.4 and 2.6 kernels, Documentation/sysrq.txt seems to
| still mention that MAGIC SYSRQ is still available, however I can not
| find it in the configuration.  When I add CONFIG_MAGIC_SYSRQ to
| .config and run oldconfig, it vanishes.

You didn't say what architecture, and the answer may vary by arch.,
especially in 2.4.x.

In 2.4.27, you have to enable 'Kernel debugging' in the
'Kernel hacking' menu in order to be able to set MAGIC_SYSRQ.
(for i386 arch.)

In 2.6.9-rc1, you have to enable 'Kernel debugging' in the
'Kernel hacking' menu in order to be able set MAGIC_SYSRQ.

What arch. specifically?

| What is the prefered method of enabling magic sysrq on i386?  That was
| a really nice feature.  I hope it has not been removed.

Nope, not going anywhere.

--
~Randy

Re: CONFIG_MAGIC_SYSRQ on i386 unavailable?

[Jeremy Brand]

On Tue, 31 Aug 2004 14:53:40 -0700, Randy.Dunlap <rddunlap@osdl.org> wrote:
> On Tue, 31 Aug 2004 13:25:19 -0700 Jeremy Brand wrote:
> 
> | Hi all,
> |
> | In the latest 2.4 and 2.6 kernels, Documentation/sysrq.txt seems to
> | still mention that MAGIC SYSRQ is still available, however I can not
> | find it in the configuration.  When I add CONFIG_MAGIC_SYSRQ to
> | .config and run oldconfig, it vanishes.
> 
> You didn't say what architecture, and the answer may vary by arch.,
> especially in 2.4.x.

Hi, Sorry, I did say the arch, but only in the subject.

i386.

> In 2.4.27, you have to enable 'Kernel debugging' in the
> 'Kernel hacking' menu in order to be able to set MAGIC_SYSRQ.
> (for i386 arch.)
> 
> In 2.6.9-rc1, you have to enable 'Kernel debugging' in the
> 'Kernel hacking' menu in order to be able set MAGIC_SYSRQ.
> 
> What arch. specifically?
> 
> | What is the prefered method of enabling magic sysrq on i386?  That was
> | a really nice feature.  I hope it has not been removed.

Thanks.

That's probably enough info anyway (re: kernel debug).

Sincerely,
Jeremy