Machine did not reboot

[Nate Lawson]

Jung-uk Kim wrote:
> On Wednesday 07 June 2006 01:44 am, Alexander Logvinov wrote:
>>>> RB_AUTOBOOT is defined as 0 in sys/reboot.h.  I don't think this
>>>> test will ever work:
>>>>       if ((howto & RB_AUTOBOOT) != 0 &&
>>>> AcpiGbl_FADT->ResetRegSup) {
>>> It's little radical but what do you think about the attached
>>> patch?  I don't think we have to call AcpiTerminate() to reboot
>>> at all.  In fact, I have a box which does not reboot.  Writing
>>> ACPI_DISABLE to SMI_CMD hangs the system and it does not support
>>> RESET_REG. :-(  If I don't call AcpiTerminate(), everything's
>>> fine.
>>   I'll try this patch soon, thanks.
> 
> I don't know what ACPI spec. says (I guess I'll have to look it up) 
> but Linux doesn't seem to use it except for ACPI init failure case.  
> Now I have another evil hack (attached).  It will help rebooting 
> without RESET_REG support and/or with broken BIOS.  Basically, it 
> just bypasses AcpiDisable(), which may cause hang when ACPI_DISABLE 
> through SMI_CMD is issued.

Thanks for both your efforts.  I've committed and MFCd a patch that does 
the same things.  I left out Jung-uk's hack because it's better just to 
not run AcpiTerminate at all than grovel in its internals.

-- 
Nate