[OpenWrt-Devel] [PATCH v4 0/6] intel-microcode: load as early as possible

[Lucian Cristian]

On 27.11.2018 19:04, John Crispin wrote:
>
> On 27/11/2018 16:11, Tomasz Maciej Nowak wrote:
>> W dniu 27.11.2018 o 14:47, Lucian Cristian pisze:
>>> On 26.11.2018 23:58, Tomasz Maciej Nowak wrote:
>>>> W dniu 26.11.2018 o 22:47, Lucian Cristian pisze:
>>>>> On 26.11.2018 23:11, Tomasz Maciej Nowak wrote:
>>>>>> W dniu 26.11.2018 o 21:44, Lucian Cristian pisze:
>>>>>>> On 20.11.2018 18:20, Tomasz Maciej Nowak wrote:
>>>>>>>> This small series addresses current problem with late loading 
>>>>>>>> of Intel
>>>>>>>> microcode in OpenWrt. Following the commit messages [1] and later
>>>>>>>> discussion, late loading off the microcode can be ineffective 
>>>>>>>> for some
>>>>>>>> processors [2] and for others disabled [3]. Also it is 
>>>>>>>> discouraged for
>>>>>>>> any processor starting from Haswell and Silvermont.
>>>>>>>> Therefore this series converts the Intel microcode bundle to an 
>>>>>>>> initial
>>>>>>>> ram disk which is loaded with grub, so kernel has access to it 
>>>>>>>> as early
>>>>>>>> as possible.
>>>>>>>> Previous patch series:
>>>>>>>> https://patchwork.ozlabs.org/project/lede/list/?series=39372
>>>>>>>>
>>>>>>>> 1. https://lore.kernel.org/patchwork/cover/348236
>>>>>>>> 2. https://lore.kernel.org/patchwork/cover/348236/#508603
>>>>>>>> 3. 
>>>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=723f2828a98c8ca19842042f418fb30dd8cfc0f7
>>> [...]
>>>>>>>> No, Your grub doesn't understand *if* command because it's old 
>>>>>>>> an doesn't have "test" module enabled. It's left there because 
>>>>>>>> sysupgrade doesn't upgrade grub, it updates only boot and root 
>>>>>>>> partitions. If You'll write the created image not by sysupgrade 
>>>>>>>> but by dd'ing to boot medium, It'll start properly without 
>>>>>>>> interruptions.
>>>>>>>> BTW thank You for the report.
>>>>>>>>
>>>>> error: can't find command '['.
>>>>> error: can't find command '['.
>>>>>
>>>>> Press any key to continue...
>>>>>
>>>>>
>>>>>
>>>>> Regards
>>>>>
>>>>>
>>> Can I repair this somehow without writing the full image ? only by 
>>> reversing the commits ?
>> No, not at the moment. I'm trying to figure out best way to update 
>> grub on sysupgrade, until then reverting the mentioned commits will 
>> bring back old behavior, and no manual intervention on boot will be 
>> necessary.
>
>
> shall we revert the series ?
>
>     John
>
>
>>> Regards
>>>
>
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sysupgrade will break things bad if you can't press any key on reboot, 
so it's better to revert for the moment


Regards


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