Forge Processor Name String on AMD CPUs

amdcpuid.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "https://chipsandcheese.com/2022/10/27/why-you-cant-trust-cpuid/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import struct\n",
    "def wrcpuid(s):\n",
    "    b = s.encode()[:47]+b'\\0'*48\n",
    "    b = b[:48]\n",
    "    vals = struct.unpack('<QQQQQQ', b)\n",
    "    addrs = range(0xC0010030, 0xC0010036)\n",
    "    print('insmod wrmsr')\n",
    "    for x in zip(addrs, vals):\n",
    "        print('wrmsr 0x%X 0x%X' % x)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "use GRUB command line or `configfile`"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "insmod wrmsr\n",
      "wrmsr 0xC0010030 0x657A795220444D41\n",
      "wrmsr 0xC0010031 0x353431312039206E\n",
      "wrmsr 0xC0010032 0x583431\n",
      "wrmsr 0xC0010033 0x0\n",
      "wrmsr 0xC0010034 0x0\n",
      "wrmsr 0xC0010035 0x0\n"
     ]
    }
   ],
   "source": [
    "wrcpuid('AMD Ryzen 9 114514X')"
   ]
  }
 ],
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