提交 cd86a536 编写于 作者: L Linus Torvalds

Merge branch 'x86-fixes-for-linus' of...

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: avoid back to back on_each_cpu in cpa_flush_array
  x86, relocs: ignore R_386_NONE in kernel relocation entries
......@@ -504,8 +504,11 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
if (sym->st_shndx == SHN_ABS) {
continue;
}
if (r_type == R_386_PC32) {
/* PC relative relocations don't need to be adjusted */
if (r_type == R_386_NONE || r_type == R_386_PC32) {
/*
* NONE can be ignored and and PC relative
* relocations don't need to be adjusted.
*/
}
else if (r_type == R_386_32) {
/* Visit relocations that need to be adjusted */
......
......@@ -204,30 +204,19 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
}
}
static void wbinvd_local(void *unused)
{
wbinvd();
}
static void cpa_flush_array(unsigned long *start, int numpages, int cache,
int in_flags, struct page **pages)
{
unsigned int i, level;
unsigned long do_wbinvd = cache && numpages >= 1024; /* 4M threshold */
BUG_ON(irqs_disabled());
on_each_cpu(__cpa_flush_range, NULL, 1);
on_each_cpu(__cpa_flush_all, (void *) do_wbinvd, 1);
if (!cache)
if (!cache || do_wbinvd)
return;
/* 4M threshold */
if (numpages >= 1024) {
if (boot_cpu_data.x86 >= 4)
on_each_cpu(wbinvd_local, NULL, 1);
return;
}
/*
* We only need to flush on one CPU,
* clflush is a MESI-coherent instruction that
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册