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Panic if cpuid is called with SGX #1977

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Merged
folkertdev merged 1 commit into from
Dec 17, 2025
Merged

Panic if cpuid is called with SGX #1977

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4 changes: 4 additions & 0 deletions crates/core_arch/src/x86/cpuid.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,10 @@ pub struct CpuidResult {
#[cfg_attr(test, assert_instr(cpuid))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn __cpuid_count(leaf: u32, sub_leaf: u32) -> CpuidResult {
if cfg!(target_env = "sgx") {
panic!("`__cpuid` cannot be used in SGX");
}

let eax;
let ebx;
let ecx;
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