Messages in this thread | | | Date | Mon, 9 Aug 2021 18:06:27 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v28 04/32] x86/cpufeatures: Introduce CPU setup and option parsing for CET |
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On Thu, Jul 22, 2021 at 01:51:51PM -0700, Yu-cheng Yu wrote: > /* > * Some CPU features depend on higher CPUID levels, which may not always > * be available due to CPUID level capping or broken virtualization > @@ -1249,6 +1257,11 @@ static void __init cpu_parse_early_param(void) > if (cmdline_find_option_bool(boot_command_line, "noxsaves")) > setup_clear_cpu_cap(X86_FEATURE_XSAVES); > > + if (cmdline_find_option_bool(boot_command_line, "no_user_shstk")) > + setup_clear_cpu_cap(X86_FEATURE_SHSTK); > + if (cmdline_find_option_bool(boot_command_line, "no_user_ibt")) > + setup_clear_cpu_cap(X86_FEATURE_IBT);
Patch 1 says:
"Disabling shadow stack also disables IBT."
I don't see that here.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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