Closed issue by ayoubkafi on void-packages repository

https://github.com/void-linux/void-packages/issues/27423

Description:
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### System

* xuname:  
  Void 5.9.16_1 x86_64 GenuineIntel uptodate rrFFF
* package:  
  linux-5.9_2

### Actual behavior
#### First
After booting Linux, this message appears
```
[    0.721523] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x00000000bdc00000-0x00000000bfffffff], contact BIOS vendor for fixes
```
and then the computer will continue

#### Second
Sometimes the system freezes for no reason. I can't move the mouse or switch between tty. The thing I can do is turn off the power from the computer
Once I checked out of the dwm window manager and was lucky enough to see this message before the system freezes
![error](https://user-images.githubusercontent.com/71545968/103137111-61033080-46c6-11eb-9bfa-5d2816882696.jpg)