Re: suspend to ram problem

[matthieu castet <castet.matthieu@free.fr>]

Rafael J. Wysocki wrote:
> On Wednesday, 6 of February 2008, matthieu castet wrote:
>> Hi,
>>
>> matthieu castet wrote:
>>> matthieu castet wrote:
>>>> Pavel Machek wrote:
>>>>> Hmm, maybe I know where problem could be. Try
>>>>>
>>>>>         movl     $(wakeup_stack - wakeup_code), %esp              # 
>>>>> Private stack is needed for ASUS bo\
>>>>>
>>>>> instead of existing stack setup. That helped on one of my test-boxes
>>>> Thanks, I will try that.
>>>> Because clearing the flags imply pop/push in the stack it could be the 
>>>> problem
>>> That doesn't help : it still crash in pushl $0.
>>>
>> All stack stuff in wakeup_code crash for me.
>> I tried to change the stack position, make sure upper bit of %esp are 
>> clear, ... nothing work.
>> What's are strange is that according to my x86 manual, in real mode the 
>> failure can only happen if the stack wrap which is not the case here.
>> Any x86 guru advice ?
>>
>> If I remove stack access (remove clearing flag stuff, not call to video 
>> stuff) the resume works.
> 
> Hm, can you place a "pushl %eax; popl %eax;" in place of the removed code and
> see if that breaks?
Yes that also break.

Matthieu