TLB Data TLB: 2 MByte or 4 MByte pages, 4-way set associative, 32 entries and a separate array with 1 GByte pages, 4-way set associative, 4 entries In 2016, the situation improved because Intel contributed the source code for a UEFI application to display CPUID leaf information to TianoCore. One of my favorites is CPU-Z.įor many years there was no utility like CPU-Z available for use from the UEFI shell. There are many utilities available which use CPUID to display processor-specific information on both Microsoft Windows and GNU/Linux platforms. It was first implemented by Intel in the 1993 Pentium processor.ĬPUID returns processor identification and feature information in the EAX, EBX, ECX, and EDX registers, as determined by input entered in EAX (and ECX in some cases.) On IA64 processors, CPUID clears the high 32 bits of the RAX, RBX, RCX and RDX registers in all modes. The CPUID (CPU IDentification) opcode ( OFA2) is a processor supplementary instruction for the IA32 and IA64 Intel architectures which enables software to determine processor type and the presence or absence of specific processor features.
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