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authorH. Peter Anvin <hpa@linux.intel.com>2014-01-29 18:07:00 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2014-01-29 18:07:00 +0100
commit4064e0ea3c0e9427e6c22392c4b69b4bfa1b7125 (patch)
tree888b52771f540552a9dc85521d8dddf66eba9aeb /arch/x86/tools/relocs.c
parentx86, boot: Use __attribute__((used)) to ensure videocard structs are emitted (diff)
parentMerge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff)
downloadlinux-4064e0ea3c0e9427e6c22392c4b69b4bfa1b7125.tar.xz
linux-4064e0ea3c0e9427e6c22392c4b69b4bfa1b7125.zip
Merge commit 'f4bcd8ccddb02833340652e9f46f5127828eb79d' into x86/build
Bring in upstream merge of x86/kaslr for future patches. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/tools/relocs.c')
-rw-r--r--arch/x86/tools/relocs.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index 9c2ab06dc4f2..cfbdbdb4e173 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -722,15 +722,25 @@ static void percpu_init(void)
/*
* Check to see if a symbol lies in the .data..percpu section.
- * For some as yet not understood reason the "__init_begin"
- * symbol which immediately preceeds the .data..percpu section
- * also shows up as it it were part of it so we do an explict
- * check for that symbol name and ignore it.
+ *
+ * The linker incorrectly associates some symbols with the
+ * .data..percpu section so we also need to check the symbol
+ * name to make sure that we classify the symbol correctly.
+ *
+ * The GNU linker incorrectly associates:
+ * __init_begin
+ * __per_cpu_load
+ *
+ * The "gold" linker incorrectly associates:
+ * init_per_cpu__irq_stack_union
+ * init_per_cpu__gdt_page
*/
static int is_percpu_sym(ElfW(Sym) *sym, const char *symname)
{
return (sym->st_shndx == per_cpu_shndx) &&
- strcmp(symname, "__init_begin");
+ strcmp(symname, "__init_begin") &&
+ strcmp(symname, "__per_cpu_load") &&
+ strncmp(symname, "init_per_cpu_", 13);
}