From f9544b2b076ca90d887c5ae5d74fab4c21bb7c13 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 3 May 2018 15:03:30 -0700 Subject: x86/bugs: Make boot modes __ro_after_init There's no reason for these to be changed after boot. Signed-off-by: Kees Cook Signed-off-by: Thomas Gleixner --- arch/x86/kernel/cpu/bugs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index e3afb610f2ad..f8d9be0e86b1 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -129,7 +129,8 @@ static const char *spectre_v2_strings[] = { #undef pr_fmt #define pr_fmt(fmt) "Spectre V2 : " fmt -static enum spectre_v2_mitigation spectre_v2_enabled = SPECTRE_V2_NONE; +static enum spectre_v2_mitigation spectre_v2_enabled __ro_after_init = + SPECTRE_V2_NONE; void x86_spec_ctrl_set(u64 val) { @@ -407,7 +408,7 @@ retpoline_auto: #undef pr_fmt #define pr_fmt(fmt) "Speculative Store Bypass: " fmt -static enum ssb_mitigation ssb_mode = SPEC_STORE_BYPASS_NONE; +static enum ssb_mitigation ssb_mode __ro_after_init = SPEC_STORE_BYPASS_NONE; /* The kernel command line selection */ enum ssb_mitigation_cmd { -- cgit