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Make has_f00f_bug extern, and get rid of some unused code in the f00f

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code.

Submitted by:	Mikael Karpberg & Cy Schubert
This commit is contained in:
Sean Eric Fagan 1997-12-03 16:27:33 +00:00
parent 0053cc58a9
commit 34883582bc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=31515
2 changed files with 4 additions and 10 deletions
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7
sys/amd64/amd64/machdep.c
View file

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.274 1997/11/24 18:35:11 bde Exp $
* $Id: machdep.c,v 1.275 1997/12/03 02:45:46 sef Exp $
*/
#include "apm.h"
@ -868,7 +868,7 @@ u_int my_tr; /* which task register setting */
#ifndef NO_F00F_HACK
struct gate_descriptor *t_idt;
int has_f00f_bug;
extern int has_f00f_bug;
#endif
static struct i386tss dblfault_tss;
@ -1548,8 +1548,6 @@ f00f_hack(void) {
struct region_descriptor r_idt;
unsigned char *tmp;
int i;
vm_offset_t vp;
unsigned *pte;
if (!has_f00f_bug)
return;
@ -1568,7 +1566,6 @@ f00f_hack(void) {
bcopy(idt, t_idt, sizeof(idt));
r_idt.rd_base = (int)t_idt;
lidt(&r_idt);
vp = trunc_page(t_idt);
if (vm_map_protect(kernel_map, tmp, tmp + PAGE_SIZE,
VM_PROT_READ, FALSE) != KERN_SUCCESS)
panic("vm_map_protect failed");

7
sys/i386/i386/machdep.c
View file

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.274 1997/11/24 18:35:11 bde Exp $
* $Id: machdep.c,v 1.275 1997/12/03 02:45:46 sef Exp $
*/
#include "apm.h"
@ -868,7 +868,7 @@ u_int my_tr; /* which task register setting */
#ifndef NO_F00F_HACK
struct gate_descriptor *t_idt;
int has_f00f_bug;
extern int has_f00f_bug;
#endif
static struct i386tss dblfault_tss;
@ -1548,8 +1548,6 @@ f00f_hack(void) {
struct region_descriptor r_idt;
unsigned char *tmp;
int i;
vm_offset_t vp;
unsigned *pte;
if (!has_f00f_bug)
return;
@ -1568,7 +1566,6 @@ f00f_hack(void) {
bcopy(idt, t_idt, sizeof(idt));
r_idt.rd_base = (int)t_idt;
lidt(&r_idt);
vp = trunc_page(t_idt);
if (vm_map_protect(kernel_map, tmp, tmp + PAGE_SIZE,
VM_PROT_READ, FALSE) != KERN_SUCCESS)
panic("vm_map_protect failed");