[PATCH] ACPI / PPTT: get PPTT table in the first beginning

[Hanjun Guo]

On 2021/9/1 15:29, Zenghui Yu wrote:
> On 2021/7/20 21:37, Sudeep Holla wrote:
>> On Tue, Jul 20, 2021 at 07:26:35PM +0800, Xiongfeng Wang wrote:
>>> When I added might_sleep() in down_timeout(), I got the following
>>
>> Sorry it is not clear if you are able to reproduce this issue without
>> any other modifications in the mainline kernel ?
> 
> Jump in this thread as the exact splat is triggered at boot time
> in the latest mainline kernel thanks to commit 99409b935c9a
> ("locking/semaphore: Add might_sleep() to down_*() family").

Please see the patch provided by Thomas Gleixner, it should
fix this issue in a better way:

https://lkml.org/lkml/2021/8/31/352

Thanks
Hanjun