RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 05:27:43 +00:00
Code Issues Activity Actions

Kernel: Add support for hypervisor CPUID feature

Browse source
This commit is contained in:
Jean-Baptiste Boric 2021-07-11 19:08:27 +02:00 • committed by Andreas Kling
parent bee75c1f24
commit 4cc346fb19
2 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Kernel/Arch/x86/common/Processor.cpp
View file

@ -93,6 +93,8 @@ UNMAP_AFTER_INIT void Processor::cpu_detect()
set_feature(CPUFeature::AVX);
if (processor_info.ecx() & (1 << 30))
set_feature(CPUFeature::RDRAND);
if (processor_info.ecx() & (1u << 31))
set_feature(CPUFeature::HYPERVISOR);
if (processor_info.edx() & (1 << 11)) {
u32 stepping = processor_info.eax() & 0xf;
u32 model = (processor_info.eax() >> 4) & 0xf;
@ -266,6 +268,8 @@ String Processor::features_string() const
return "avx";
case CPUFeature::LM:
return "lm";
case CPUFeature::HYPERVISOR:
return "hypervisor";
// no default statement here intentionally so that we get
// a warning if a new feature is forgotten to be added here
}