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SubjectRe: [x86-tip] RSDP changes converted i4790 box SMP -> UP
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On 15.01.2018 17:42, Juergen Gross wrote:
> On 15/01/18 17:29, Gabriel C wrote:
>> On 15.01.2018 16:40, Juergen Gross wrote:
>>> On 15/01/18 16:32, Ingo Molnar wrote:
>>>>
>>
>> Hi Juergen,
>>
>>>> * Juergen Gross <jgross@suse.com> wrote:
>>>>
>>>>> On 15/01/18 15:56, Borislav Petkov wrote:
>>>>>> On Mon, Jan 15, 2018 at 03:52:25PM +0100, Juergen Gross wrote:
>>>>>>> Ingo, with my finding that above boot failure is related to a bug in
>>>>>>> openSUSE's grub2 (I've verified it soesn't exist in upstream grub2),
>>>>>>
>>>>>> The box I'm seeing this on has SLES12-SP2 grub:
>>>>>>
>>>>>> Version        : 2.02~beta2-115.9.1
>>>>>>
>>>>>> Does it have the same bug?
>>>>>
>>>>> The patch introducing this problem is from 2012. So I guess: yes.
>>>>
>>>> I suspect this makes it a widespread, unintended ABI. Can we detect
>>>> and somehow avoid it?
>>>>
>>>> The boot protocol ABI sucks if it's fragile against such mistakes.
>>>
>>> Well, copying sizeof(setup_header) into grub2 and then coyping back just
>>> 1024 bytes is plain wrong. It is a miracle nothing broke up to now.
>>>
>>
>> I'm not on SUSE and hit that too on an H11DSi-NT.
>> See: https://marc.info/?l=linux-kernel&m=151579540320553&w=2
>
> Where does your grub come from?

https://github.com/frugalware/frugalware-current/tree/master/source/base/grub2

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