feat: real CPU detection for /proc/cpuinfo#169
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Add CPUID-based detection on x86_64 and system register reads (MIDR_EL1, ID_AA64ISAR0_EL1, ID_AA64PFR0_EL1, etc.) on ARM64 to populate /proc/cpuinfo with real hardware data instead of hardcoded placeholder values. x86_64 now reports: vendor, family, model, stepping, brand string, and feature flags derived from CPUID leaves 0/1/0x80000001-4. ARM64 now reports: implementer, part name, variant, revision, and feature flags derived from ID register fields. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
arch_impl/x86_64/cpuinfo.rs) that reads vendor ID, family/model/stepping, brand string, and feature flags from CPUID leaves 0/1/0x80000001-4arch_impl/aarch64/cpuinfo.rs) that reads MIDR_EL1, MPIDR_EL1, ID_AA64ISAR0/1_EL1, ID_AA64PFR0_EL1, and ID_AA64MMFR0_EL1 for implementer, part name, and feature detectiongenerate_cpuinfo()in procfs to use real detected values instead of hardcoded placeholdersTest plan
[boot] CPU detected: ARM Cortex-A72CPU detected: QEMU Virtual CPU version 2.5+🤖 Generated with Claude Code