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x86: misc. constifications

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Miscellaneous x86 stuff that can live in .rodata.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jan Beulich
2007-10-17 18:04:37 +02:00
committed by Thomas Gleixner
parent df5ddf620e
commit 121d7bf5a2
7 changed files with 31 additions and 26 deletions
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30
arch/x86/kernel/alternative.c
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@@ -63,11 +63,11 @@ __setup("noreplace-paravirt", setup_noreplace_paravirt);
/* Use inline assembly to define this because the nops are defined
as inline assembly strings in the include files and we cannot
get them easily into strings. */
asm("\t.data\nintelnops: "
asm("\t.section .rodata, \"a\"\nintelnops: "
GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
GENERIC_NOP7 GENERIC_NOP8);
extern unsigned char intelnops[];
static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
extern const unsigned char intelnops[];
static const unsigned char *const intel_nops[ASM_NOP_MAX+1] = {
NULL,
intelnops,
intelnops + 1,
@@ -81,11 +81,11 @@ static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
#endif
#ifdef K8_NOP1
asm("\t.data\nk8nops: "
asm("\t.section .rodata, \"a\"\nk8nops: "
K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
K8_NOP7 K8_NOP8);
extern unsigned char k8nops[];
static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
extern const unsigned char k8nops[];
static const unsigned char *const k8_nops[ASM_NOP_MAX+1] = {
NULL,
k8nops,
k8nops + 1,
@@ -99,11 +99,11 @@ static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
#endif
#ifdef K7_NOP1
asm("\t.data\nk7nops: "
asm("\t.section .rodata, \"a\"\nk7nops: "
K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
K7_NOP7 K7_NOP8);
extern unsigned char k7nops[];
static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
extern const unsigned char k7nops[];
static const unsigned char *const k7_nops[ASM_NOP_MAX+1] = {
NULL,
k7nops,
k7nops + 1,
@@ -119,25 +119,25 @@ static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
#ifdef CONFIG_X86_64
extern char __vsyscall_0;
static inline unsigned char** find_nop_table(void)
static inline const unsigned char*const * find_nop_table(void)
{
return k8_nops;
}
#else /* CONFIG_X86_64 */
static struct nop {
static const struct nop {
int cpuid;
unsigned char **noptable;
const unsigned char *const *noptable;
} noptypes[] = {
{ X86_FEATURE_K8, k8_nops },
{ X86_FEATURE_K7, k7_nops },
{ -1, NULL }
};
static unsigned char** find_nop_table(void)
static const unsigned char*const * find_nop_table(void)
{
unsigned char **noptable = intel_nops;
const unsigned char *const *noptable = intel_nops;
int i;
for (i = 0; noptypes[i].cpuid >= 0; i++) {
@@ -154,7 +154,7 @@ static unsigned char** find_nop_table(void)
/* Use this to add nops to a buffer, then text_poke the whole buffer. */
static void add_nops(void *insns, unsigned int len)
{
unsigned char **noptable = find_nop_table();
const unsigned char *const *noptable = find_nop_table();
while (len > 0) {
unsigned int noplen = len;