Thank you, Sven, for your answer to the topic of qubes-hcl-report. I have one aditional question.
If I type in a console "cat /proc/cpuinfo", I get an output, where one line is called "bugs". It looks like my cpu has a lot of bugs: null_seg, cpu_meltdown, spectre_v1, spectre_v2, spec_store_bypass, l1tf, mds, swapgs, itlb_multihit, srbds.
The producer of my computer offeres a bios and microprocessor update for the purpose to fix these bugs. It is an exe-file for Windows: https://www.dell.com/support/home/de-ch/drivers/driversdetails?driverid=5m70h&oscode=wt32a&productcode=optiplex-7010
Okay, lets say, we can trust Intel and the computer manufacturer. But is it really necesarry to install the update as long as I work with Qubes OS?