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Commit ea055f7d authored by Kees Cook's avatar Kees Cook Committed by Greg Kroah-Hartman
Browse files

x86/bugs: Make boot modes __ro_after_init 



commit f9544b2b076ca90d887c5ae5d74fab4c21bb7c13 upstream

There's no reason for these to be changed after boot.

Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarDavid Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0a112f10

arch/x86/kernel/cpu/bugs.c

+3 −2
Original line number Diff line number Diff line
@@ -128,7 +128,8 @@ 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)

{
@@ -406,7 +407,7 @@ static void __init spectre_v2_select_mitigation(void) 
#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 {