package/kernel/linux/5x86-no-speculation.patch

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   2 # T2 SDE: package/*/linux/5x86-no-speculation.patch
   3 # Copyright (C) 2022 The T2 SDE Project
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  13
  14 AFAIC the upstream cpu vuln whitelist misses many 5x86 clones,
  15 "CyrixInstead", "NexGenDriven", "RiseRiseRise", "SiS SiS SiS ",
  16 "UMC UMC UMC ", "VIA VIA VIA ".
  17
  18    - René Rebe
  19
  20 --- linux-5.19/arch/x86/kernel/cpu/common.c.vanilla     2022-08-17 22:54:39.789471844 +0200
  21 +++ linux-5.19/arch/x86/kernel/cpu/common.c     2022-08-17 22:58:06.073464942 +0200
  22 @@ -1150,10 +1150,7 @@
  23
  24  static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = {
  25         VULNWL(ANY,     4, X86_MODEL_ANY,       NO_SPECULATION),
  26 -       VULNWL(CENTAUR, 5, X86_MODEL_ANY,       NO_SPECULATION),
  27 -       VULNWL(INTEL,   5, X86_MODEL_ANY,       NO_SPECULATION),
  28 -       VULNWL(NSC,     5, X86_MODEL_ANY,       NO_SPECULATION),
  29 -       VULNWL(VORTEX,  5, X86_MODEL_ANY,       NO_SPECULATION),
  30 +       VULNWL(ANY,     5, X86_MODEL_ANY,       NO_SPECULATION),
  31         VULNWL(VORTEX,  6, X86_MODEL_ANY,       NO_SPECULATION),
  32
  33         /* Intel Family 6 */