- Joined
- May 22, 2010
- Messages
- 442 (0.08/day)
| Processor | R7-7700X |
|---|---|
| Motherboard | Gigabyte X670 Aorus Elite AX |
| Cooling | Scythe Fuma 2 rev B |
| Memory | no name DDR5-5200 |
| Video Card(s) | Some 3080 10GB |
| Storage | dual Intel DC P4610 1.6TB |
| Display(s) | Gigabyte G34MQ + Dell 2708WFP |
| Case | Lian-Li Lancool III black no rgb |
| Power Supply | CM UCP 750W |
| Software | Win 10 Pro x64 |
Hello,
i've been looking at this for the best part of a month with no solutions and kind of lost as to where actually to ask, so let's start here:
As you all know, MS in their infinity "wisdom" has hardcoded STIBP and IBRS/IBPB protections on Windows, EVEN when you manually disable ALL mitigations (such a dumb thing to do on MS part), whilst on Linux you can disable ALL mitigations. STIBP is a particularly terrible one as it has a steep impact on SMT systems.
ATM the onyl way to disable this stupid default is for the BIOS to force-disable STIBP by setting a flag or masking the feature flag for the CPU, now some business computers have this option in BIOS(some HP elite desktops and elitebooks), but consumer ones don't, and even less for year-old abandoned platforms.
All my searchs on this subject yield forums and people that want to mod STIBP IN by or pre-baking ucode updates on the BIOS(which i don't want to, besides Windows updates the ucode on boot just like linux does, so your BIOS ucode is ignored).
¿has anyone done something like this?, or know where to point me to?
i've been looking at this for the best part of a month with no solutions and kind of lost as to where actually to ask, so let's start here:
As you all know, MS in their infinity "wisdom" has hardcoded STIBP and IBRS/IBPB protections on Windows, EVEN when you manually disable ALL mitigations (such a dumb thing to do on MS part), whilst on Linux you can disable ALL mitigations. STIBP is a particularly terrible one as it has a steep impact on SMT systems.
ATM the onyl way to disable this stupid default is for the BIOS to force-disable STIBP by setting a flag or masking the feature flag for the CPU, now some business computers have this option in BIOS(some HP elite desktops and elitebooks), but consumer ones don't, and even less for year-old abandoned platforms.
All my searchs on this subject yield forums and people that want to mod STIBP IN by or pre-baking ucode updates on the BIOS(which i don't want to, besides Windows updates the ucode on boot just like linux does, so your BIOS ucode is ignored).
¿has anyone done something like this?, or know where to point me to?