diff options
| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2009-03-04 21:06:53 +0900 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2009-03-26 11:02:51 -0700 |
| commit | ee158fcd095c8233c9b578fbbe8a5897979a52a9 (patch) | |
| tree | 5b10977ac6305d181406c7b68a4ce2b8cb194f26 | |
| parent | 03f511dd02f1431ef652fb97a7f2fe7aef47e025 (diff) | |
| download | linux-ee158fcd095c8233c9b578fbbe8a5897979a52a9.tar.bz2 | |
ia64/pv_ops/bp/module: support binary patching for kernel module.
support binary patching for kernel module.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | arch/ia64/include/asm/module.h | 6 | ||||
| -rw-r--r-- | arch/ia64/kernel/module.c | 32 |
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/module.h b/arch/ia64/include/asm/module.h index d2da61e4c49b..908eaef42a08 100644 --- a/arch/ia64/include/asm/module.h +++ b/arch/ia64/include/asm/module.h @@ -16,6 +16,12 @@ struct mod_arch_specific { struct elf64_shdr *got; /* global offset table */ struct elf64_shdr *opd; /* official procedure descriptors */ struct elf64_shdr *unwind; /* unwind-table section */ +#ifdef CONFIG_PARAVIRT + struct elf64_shdr *paravirt_bundles; + /* paravirt_alt_bundle_patch table */ + struct elf64_shdr *paravirt_insts; + /* paravirt_alt_inst_patch table */ +#endif unsigned long gp; /* global-pointer for module */ void *core_unw_table; /* core unwind-table cookie returned by unwinder */ diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c index aaa7d901521f..34fe4259a144 100644 --- a/arch/ia64/kernel/module.c +++ b/arch/ia64/kernel/module.c @@ -446,6 +446,14 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings, mod->arch.opd = s; else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0) mod->arch.unwind = s; +#ifdef CONFIG_PARAVIRT + else if (strcmp(".paravirt_bundles", + secstrings + s->sh_name) == 0) + mod->arch.paravirt_bundles = s; + else if (strcmp(".paravirt_insts", + secstrings + s->sh_name) == 0) + mod->arch.paravirt_insts = s; +#endif if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) { printk(KERN_ERR "%s: sections missing\n", mod->name); @@ -921,6 +929,30 @@ module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mo DEBUGP("%s: init: entry=%p\n", __func__, mod->init); if (mod->arch.unwind) register_unwind_table(mod); +#ifdef CONFIG_PARAVIRT + if (mod->arch.paravirt_bundles) { + struct paravirt_patch_site_bundle *start = + (struct paravirt_patch_site_bundle *) + mod->arch.paravirt_bundles->sh_addr; + struct paravirt_patch_site_bundle *end = + (struct paravirt_patch_site_bundle *) + (mod->arch.paravirt_bundles->sh_addr + + mod->arch.paravirt_bundles->sh_size); + + paravirt_patch_apply_bundle(start, end); + } + if (mod->arch.paravirt_insts) { + struct paravirt_patch_site_inst *start = + (struct paravirt_patch_site_inst *) + mod->arch.paravirt_insts->sh_addr; + struct paravirt_patch_site_inst *end = + (struct paravirt_patch_site_inst *) + (mod->arch.paravirt_insts->sh_addr + + mod->arch.paravirt_insts->sh_size); + + paravirt_patch_apply_inst(start, end); + } +#endif return 0; } |