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support IA-32e's "execute disable bit"

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NAKAMURA Gou
2014-04-08 19:20:02 +09:00
parent 39a86fad18
commit 56f0d3b29f
2 changed files with 47 additions and 1 deletions
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10
arch/x86/kernel/memory.c
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@@ -219,7 +219,15 @@ static struct page_table *__alloc_new_pt(enum ihk_mc_ap_flag ap_flag)
* but L2 and L1 do not!
*/
#define ATTR_MASK (PTATTR_WRITABLE | PTATTR_USER | PTATTR_ACTIVE)
static enum ihk_mc_pt_attribute attr_mask = PTATTR_WRITABLE | PTATTR_USER | PTATTR_ACTIVE;
#define ATTR_MASK attr_mask
void enable_ptattr_no_execute(void)
{
attr_mask |= PTATTR_NO_EXECUTE;
return;
}
#if 0
static unsigned long attr_to_l4attr(enum ihk_mc_pt_attribute attr)
{