diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0039-x86-pti-Mark-constant-arrays-as-__initconst.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0039-x86-pti-Mark-constant-arrays-as-__initconst.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0039-x86-pti-Mark-constant-arrays-as-__initconst.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0039-x86-pti-Mark-constant-arrays-as-__initconst.patch new file mode 100644 index 00000000..a53ec46b --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0039-x86-pti-Mark-constant-arrays-as-__initconst.patch @@ -0,0 +1,55 @@ +From a89a8bf00b6ad57d89f9d42ae682f7367fcd0d27 Mon Sep 17 00:00:00 2001 +From: Arnd Bergmann <arnd@arndb.de> +Date: Fri, 2 Feb 2018 22:39:23 +0100 +Subject: [PATCH 39/42] x86/pti: Mark constant arrays as __initconst + +(cherry picked from commit 4bf5d56d429cbc96c23d809a08f63cd29e1a702e) + +I'm seeing build failures from the two newly introduced arrays that +are marked 'const' and '__initdata', which are mutually exclusive: + +arch/x86/kernel/cpu/common.c:882:43: error: 'cpu_no_speculation' causes a section type conflict with 'e820_table_firmware_init' +arch/x86/kernel/cpu/common.c:895:43: error: 'cpu_no_meltdown' causes a section type conflict with 'e820_table_firmware_init' + +The correct annotation is __initconst. + +Fixes: fec9434a12f3 ("x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown") +Signed-off-by: Arnd Bergmann <arnd@arndb.de> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Cc: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> +Cc: Andy Lutomirski <luto@kernel.org> +Cc: Borislav Petkov <bp@suse.de> +Cc: Thomas Garnier <thgarnie@google.com> +Cc: David Woodhouse <dwmw@amazon.co.uk> +Link: https://lkml.kernel.org/r/20180202213959.611210-1-arnd@arndb.de +Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + arch/x86/kernel/cpu/common.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c +index 60e537d..08e89ed 100644 +--- a/arch/x86/kernel/cpu/common.c ++++ b/arch/x86/kernel/cpu/common.c +@@ -861,7 +861,7 @@ static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c) + #endif + } + +-static const __initdata struct x86_cpu_id cpu_no_speculation[] = { ++static const __initconst struct x86_cpu_id cpu_no_speculation[] = { + { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CEDARVIEW, X86_FEATURE_ANY }, + { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CLOVERVIEW, X86_FEATURE_ANY }, + { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_LINCROFT, X86_FEATURE_ANY }, +@@ -874,7 +874,7 @@ static const __initdata struct x86_cpu_id cpu_no_speculation[] = { + {} + }; + +-static const __initdata struct x86_cpu_id cpu_no_meltdown[] = { ++static const __initconst struct x86_cpu_id cpu_no_meltdown[] = { + { X86_VENDOR_AMD }, + {} + }; +-- +2.7.4 + |