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Advancing to subleaf 1 (by making another call to CPUID with EAX=Bh and ECX=1) could for instance return 201h in ECX, meaning that this is a core-type level, and 4 in EBX because there are 4 logical processors in the package; EAX returned could be any value greater than 3, because it so happens that bit number 2 is used to identify the core in ...
Read Time Stamp Counter and Processor ID. RDTSCP: 0F 01 F9: Read Time Stamp Counter and processor core ID. [v] The TSC value is placed in EDX:EAX and the core ID in ECX. [w] Usually 3 [x] K8, [y] Nehalem, Silvermont, Nano: POPCNT [z] Population Count. POPCNT r16,r/m16 POPCNT r32,r/m32: F3 0F B8 /r: Count the number of bits that are set to 1 in ...
In computing, the process identifier (a.k.a. process ID or PID) is a number used by most operating system kernels—such as those of Unix, macOS and Windows—to uniquely identify an active process. This number may be used as a parameter in various function calls, allowing processes to be manipulated, such as adjusting the process's priority or ...
Sid — Debian GNU/Linux unstable development distribution; Sidewinder — ATI Radeon2; Silence — RIAA project to scan computers for MP3 files and delete them; Silverdale — Intel processor virtualization features; Silverstone — Turbolinux 8.W; Sirius — Sun CPU card in Sun-3/260, 3/280; Sirius — Yellow Dog Linux 3.0; Sisyphus — ALT Linux
Process Number (PID) – unique identification number for each process (also known as Process ID); Program Counter (PC) – a pointer to the address of the next instruction to be executed for this process; CPU Registers – register set where process needs to be stored for execution for running state;
CPUID model numbers are 30h-3Fh. AMD Excavator Family 15h (4th-gen) – fourth-generation Bulldozer (Final optimisation). CPUID model numbers are 60h-6Fh, later updated revisions have model numbers 70h-7Fh. AMD Zen – family of microarchitectures. The successor to Bulldozer. Included in the Ryzen and Epyc CPU lines.
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Use of the Linux msr kernel module creates a pseudo file "/dev/cpu/x/msr" (with a unique x for each processor or processor core). A user with permissions to read and/or write to this file can use the file I/O API to access these registers. The msr-tools [6] package provides a reference implementation.