[PATCH V2] x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN

From: Thomas Gleixner
Date: Fri Jan 05 2018 - 09:27:47 EST


Subject: x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date: Fri, 05 Jan 2018 15:05:27 +0100

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

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---

V2: This time quilt refreshed ...

---
arch/x86/include/asm/cpufeatures.h | 2 +-
arch/x86/kernel/cpu/common.c | 2 +-
arch/x86/mm/pti.c | 6 +++---
3 files changed, 5 insertions(+), 5 deletions(-)

--- 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 */
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -900,7 +900,7 @@ static void __init early_identify_cpu(st
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);

--- 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(v
}

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);