diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0051-x86-pti-Rename-BUG_CPU_INSECURE-to-BUG_CPU_MELTDOWN.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0051-x86-pti-Rename-BUG_CPU_INSECURE-to-BUG_CPU_MELTDOWN.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0051-x86-pti-Rename-BUG_CPU_INSECURE-to-BUG_CPU_MELTDOWN.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0051-x86-pti-Rename-BUG_CPU_INSECURE-to-BUG_CPU_MELTDOWN.patch new file mode 100644 index 00000000..0d994853 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0051-x86-pti-Rename-BUG_CPU_INSECURE-to-BUG_CPU_MELTDOWN.patch @@ -0,0 +1,61 @@ +From 61f2363570145629ccd0478eeb77756f2aee3e05 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Fri, 5 Jan 2018 15:27:34 +0100 +Subject: [PATCH 051/103] x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN + +commit de791821c295cc61419a06fe5562288417d1bc58 upstream. + +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 +Signed-off-by: Razvan Ghitulete <rga@amazon.de> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + arch/x86/include/asm/cpufeatures.h | 2 +- + arch/x86/kernel/cpu/common.c | 2 +- + 2 files changed, 2 insertions(+), 2 deletions(-) + +diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h +index 57bd52c..985dfd7 100644 +--- a/arch/x86/include/asm/cpufeatures.h ++++ b/arch/x86/include/asm/cpufeatures.h +@@ -316,6 +316,6 @@ + #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 8c81adc..5ab4fd7 100644 +--- a/arch/x86/kernel/cpu/common.c ++++ b/arch/x86/kernel/cpu/common.c +@@ -884,7 +884,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) + setup_force_cpu_cap(X86_FEATURE_ALWAYS); + + /* Assume for now that ALL x86 CPUs are insecure */ +- setup_force_cpu_bug(X86_BUG_CPU_INSECURE); ++ setup_force_cpu_bug(X86_BUG_CPU_MELTDOWN); + + fpu__init_system(c); + } +-- +2.7.4 + |