Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support
From: Dave Hansen <dave.hansen@linux.intel.com>
Date: 2018-07-10 23:40:40
Also in:
linux-api, linux-arch, linux-mm, lkml
On 07/10/2018 03:26 PM, Yu-cheng Yu wrote:
+static __init int setup_disable_shstk(char *s)
+{
+ /* require an exact match without trailing characters */
+ if (strlen(s))
+ return 0;
+
+ if (!boot_cpu_has(X86_FEATURE_SHSTK))
+ return 1;
+
+ setup_clear_cpu_cap(X86_FEATURE_SHSTK);
+ pr_info("x86: 'no_cet_shstk' specified, disabling Shadow Stack\n");
+ return 1;
+}
+__setup("no_cet_shstk", setup_disable_shstk);Why do we need a boot-time disable for this? -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html