x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN

Use the name associated with the particular attack which needs page table
isolation for mitigation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Jiri Koshina <jikos@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Lutomirski  <luto@amacapital.net>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Greg KH <gregkh@linux-foundation.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801051525300.1724@nanos

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 07cdd17157050e4123bdffc43347ecd58811bc1d..21ac898df2d8e478b6e214f3e816fde937ecfd03 100644 (file)
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -341,6 +341,6 @@
 #define X86_BUG_SWAPGS_FENCE           X86_BUG(11) /* SWAPGS without input dep on GS */
 #define X86_BUG_MONITOR                        X86_BUG(12) /* IPI required to wake up remote CPU */
 #define X86_BUG_AMD_E400               X86_BUG(13) /* CPU is among the affected by Erratum 400 */
-#define X86_BUG_CPU_INSECURE           X86_BUG(14) /* CPU is insecure and needs kernel page table isolation */
+#define X86_BUG_CPU_MELTDOWN           X86_BUG(14) /* CPU is affected by meltdown attack and needs kernel page table isolation */
 
 #endif /* _ASM_X86_CPUFEATURES_H */

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index b1be494ab4e8badf1bb225e34a7a7e4203af6de4..2d3bd2215e5b47b87e6383dd1386e871e71bbcde 100644 (file)
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -900,7 +900,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
        setup_force_cpu_cap(X86_FEATURE_ALWAYS);
 
        if (c->x86_vendor != X86_VENDOR_AMD)
-               setup_force_cpu_bug(X86_BUG_CPU_INSECURE);
+               setup_force_cpu_bug(X86_BUG_CPU_MELTDOWN);
 
        fpu__init_system(c);
 

diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index 2da28ba975082474b83664e7d58836ed82c6432a..43d4a4a29037ed9064668944e59f400490d5b658 100644 (file)
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -56,13 +56,13 @@
 
 static void __init pti_print_if_insecure(const char *reason)
 {
-       if (boot_cpu_has_bug(X86_BUG_CPU_INSECURE))
+       if (boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN))
                pr_info("%s\n", reason);
 }
 
 static void __init pti_print_if_secure(const char *reason)
 {
-       if (!boot_cpu_has_bug(X86_BUG_CPU_INSECURE))
+       if (!boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN))
                pr_info("%s\n", reason);
 }
 
@@ -96,7 +96,7 @@ void __init pti_check_boottime_disable(void)
        }
 
 autosel:
-       if (!boot_cpu_has_bug(X86_BUG_CPU_INSECURE))
+       if (!boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN))
                return;
 enable:
        setup_force_cpu_cap(X86_FEATURE_PTI);