x86, 64-bit: patch paravirt inline replacements when loading modules
small speedup.
Paravirt replacements were added to the i386 module loader by commit
139ec7c416
. This adds the same code to
the x86_64 module loader.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
parent
543cf4cb3f
commit
5e5a29bf26
1 changed files with 9 additions and 1 deletions
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@ -150,7 +150,8 @@ int module_finalize(const Elf_Ehdr *hdr,
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const Elf_Shdr *sechdrs,
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struct module *me)
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{
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const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL;
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const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL,
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*para = NULL;
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char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
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for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
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@ -160,6 +161,8 @@ int module_finalize(const Elf_Ehdr *hdr,
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alt = s;
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if (!strcmp(".smp_locks", secstrings + s->sh_name))
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locks= s;
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if (!strcmp(".parainstructions", secstrings + s->sh_name))
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para = s;
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}
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if (alt) {
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@ -175,6 +178,11 @@ int module_finalize(const Elf_Ehdr *hdr,
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tseg, tseg + text->sh_size);
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}
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if (para) {
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void *pseg = (void *)para->sh_addr;
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apply_paravirt(pseg, pseg + para->sh_size);
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}
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return module_bug_finalize(hdr, sechdrs, me);
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}
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