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x86, 64-bit: patch paravirt inline replacements when loading modules

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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:
Anders H Kaseorg 2008-06-28 18:25:41 -04:00 committed by Ingo Molnar
parent 543cf4cb3f
commit 5e5a29bf26
1 changed files with 9 additions and 1 deletions
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10
arch/x86/kernel/module_64.c
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@ -150,7 +150,8 @@ int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL;
const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL,
*para = NULL;
char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
@ -160,6 +161,8 @@ int module_finalize(const Elf_Ehdr *hdr,
alt = s;
if (!strcmp(".smp_locks", secstrings + s->sh_name))
locks= s;
if (!strcmp(".parainstructions", secstrings + s->sh_name))
para = s;
}
if (alt) {
@ -175,6 +178,11 @@ int module_finalize(const Elf_Ehdr *hdr,
tseg, tseg + text->sh_size);
}
if (para) {
void *pseg = (void *)para->sh_addr;
apply_paravirt(pseg, pseg + para->sh_size);
}
return module_bug_finalize(hdr, sechdrs, me);
}