In place kexec

[H. Peter Anvin]

On 07/29/2010 12:55 PM, Randy Dunlap wrote:
>>
>> And device_shutdown calls every drivers .shutdown method.
>>
>> Things like this are always a driver problem.
> 
> so is there a default .shutdown method for drivers that do not specify one?
> 
> like the qla2xxx driver does not.
> 

If it doesn't, even if bus mastering gets shut off at the core level,
there is a risk that is clobbers data when it turns it back on if the
initialization sequence is problematic.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.