[GIT PULL] x86 fixes for v3.14-rc5

From: H. Peter Anvin
Date: Sat Mar 01 2014 - 23:28:32 EST


Hi Linus,

The following changes since commit cfbf8d4857c26a8a307fb7cd258074c9dcd8c691:

Linux 3.14-rc4 (2014-02-23 17:40:03 -0800)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

for you to fetch changes up to e290e8c59dbc2a15088d868170d799f763202fef:

x86, kaslr: add missed "static" declarations (2014-02-25 16:59:29 -0800)

The VMCOREINFO patch I'll pushing for this release to avoid having a
release with kASLR and but without that information.

I was hoping to include the FPU patches from Suresh, but ran into a
problem (see other thread); will try to make them happen next week.

-hpa

----------------------------------------------------------------
Eugene Surovegin (1):
x86, kaslr: export offset in VMCOREINFO ELF notes

Kees Cook (1):
x86, kaslr: add missed "static" declarations

arch/x86/boot/compressed/aslr.c | 9 +++++----
arch/x86/kernel/machine_kexec_64.c | 2 ++
2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c
index 90a21f430117..4dbf967da50d 100644
--- a/arch/x86/boot/compressed/aslr.c
+++ b/arch/x86/boot/compressed/aslr.c
@@ -111,7 +111,7 @@ struct mem_vector {
};

#define MEM_AVOID_MAX 5
-struct mem_vector mem_avoid[MEM_AVOID_MAX];
+static struct mem_vector mem_avoid[MEM_AVOID_MAX];

static bool mem_contains(struct mem_vector *region, struct mem_vector *item)
{
@@ -180,7 +180,7 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
}

/* Does this memory vector overlap a known avoided area? */
-bool mem_avoid_overlap(struct mem_vector *img)
+static bool mem_avoid_overlap(struct mem_vector *img)
{
int i;

@@ -192,8 +192,9 @@ bool mem_avoid_overlap(struct mem_vector *img)
return false;
}

-unsigned long slots[CONFIG_RANDOMIZE_BASE_MAX_OFFSET / CONFIG_PHYSICAL_ALIGN];
-unsigned long slot_max = 0;
+static unsigned long slots[CONFIG_RANDOMIZE_BASE_MAX_OFFSET /
+ CONFIG_PHYSICAL_ALIGN];
+static unsigned long slot_max;

static void slots_append(unsigned long addr)
{
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 4eabc160696f..679cef0791cd 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -279,5 +279,7 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_SYMBOL(node_data);
VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
#endif
+ vmcoreinfo_append_str("KERNELOFFSET=%lx\n",
+ (unsigned long)&_text - __START_KERNEL);
}

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