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idt
1997 Nov 13
0
Linux F00F Patch [Forwarded e-mail from Aleph One]
...97
+++ linux/arch/i386/kernel/traps.c Wed Nov 12 11:09:56 1997
@@ -413,6 +413,51 @@
#endif /* CONFIG_MATH_EMULATION */
+static struct
+{
+ short limit __attribute__((packed));
+ void * addr __attribute__((packed));
+ short __pad __attribute__((packed));
+} idt_d;
+
+void * idt2;
+
+__initfunc(void trap_init_f00f_bug(void))
+{
+ pgd_t * pgd;
+ pmd_t * pmd;
+ pte_t * pte;
+ unsigned long twopage;
+
+ printk("moving IDT ... ");
+
+ twopage = (unsigned long) vmalloc (2*PAGE_SIZE);
+
+ idt2 = (void *)(twopage + 4096-7*8);
+
+...