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cpuid: Add bits to support AMD specific topology handling #109

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Jul 18, 2023
Merged

cpuid: Add bits to support AMD specific topology handling #109

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13 changes: 11 additions & 2 deletions mshv-ioctls/src/ioctls/vcpu.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -985,14 +985,23 @@ impl VcpuFd {
let mut ret = Ok(());

for entry in cpuid.as_slice().iter() {
let override_arg = None;
let mut override_arg = None;
let mut subleaf_specific = None;

match entry.function {
// Intel
// 0xb - Extended Topology Enumeration Leaf
// 0x1f - V2 Extended Topology Enumeration Leaf
0xb | 0x1f => {
// AMD
// 0x8000_001e - Processor Topology Information
// 0x8000_0026 - Extended CPU Topology
0xb | 0x1f | 0x8000_001e | 0x8000_0026 => {
subleaf_specific = Some(1);
override_arg = None;
}
0x0000_0001 | 0x8000_0008 => {
subleaf_specific = None;
override_arg = Some(1);
}
_ => {}
}
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