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-rw-r--r--arch/i386/kernel/module.c32
1 files changed, 22 insertions, 10 deletions
diff --git a/arch/i386/kernel/module.c b/arch/i386/kernel/module.c
index 5149c8a621f0..470cf97e7cd3 100644
--- a/arch/i386/kernel/module.c
+++ b/arch/i386/kernel/module.c
@@ -104,26 +104,38 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
104 return -ENOEXEC; 104 return -ENOEXEC;
105} 105}
106 106
107extern void apply_alternatives(void *start, void *end);
108
109int module_finalize(const Elf_Ehdr *hdr, 107int module_finalize(const Elf_Ehdr *hdr,
110 const Elf_Shdr *sechdrs, 108 const Elf_Shdr *sechdrs,
111 struct module *me) 109 struct module *me)
112{ 110{
113 const Elf_Shdr *s; 111 const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL;
114 char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; 112 char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
115 113
116 /* look for .altinstructions to patch */
117 for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { 114 for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
118 void *seg; 115 if (!strcmp(".text", secstrings + s->sh_name))
119 if (strcmp(".altinstructions", secstrings + s->sh_name)) 116 text = s;
120 continue; 117 if (!strcmp(".altinstructions", secstrings + s->sh_name))
121 seg = (void *)s->sh_addr; 118 alt = s;
122 apply_alternatives(seg, seg + s->sh_size); 119 if (!strcmp(".smp_locks", secstrings + s->sh_name))
123 } 120 locks= s;
121 }
122
123 if (alt) {
124 /* patch .altinstructions */
125 void *aseg = (void *)alt->sh_addr;
126 apply_alternatives(aseg, aseg + alt->sh_size);
127 }
128 if (locks && text) {
129 void *lseg = (void *)locks->sh_addr;
130 void *tseg = (void *)text->sh_addr;
131 alternatives_smp_module_add(me, me->name,
132 lseg, lseg + locks->sh_size,
133 tseg, tseg + text->sh_size);
134 }
124 return 0; 135 return 0;
125} 136}
126 137
127void module_arch_cleanup(struct module *mod) 138void module_arch_cleanup(struct module *mod)
128{ 139{
140 alternatives_smp_module_del(mod);
129} 141}