3 files changed, 4 insertions, 18 deletions

diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index d4a0d0ac9935..a30e004682e2 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -39,9 +39,9 @@
 #include <linux/module.h>
 #include <linux/kdebug.h>
 
-#include <asm/cacheflush.h>
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
+#include <asm/alternative.h>
 
 void jprobe_return_end(void);
 static void __kprobes arch_copy_kprobe(struct kprobe *p);
@@ -209,16 +209,12 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p)
 
 void __kprobes arch_arm_kprobe(struct kprobe *p)
 {
-        *p->addr = BREAKPOINT_INSTRUCTION;
-        flush_icache_range((unsigned long) p->addr,
-                           (unsigned long) p->addr + sizeof(kprobe_opcode_t));
+        text_poke(p->addr, ((unsigned char []){BREAKPOINT_INSTRUCTION}), 1);
 }
 
 void __kprobes arch_disarm_kprobe(struct kprobe *p)
 {
-        *p->addr = p->opcode;
-        flush_icache_range((unsigned long) p->addr,
-                           (unsigned long) p->addr + sizeof(kprobe_opcode_t));
+        text_poke(p->addr, &p->opcode, 1);
 }
 
 void __kprobes arch_remove_kprobe(struct kprobe *p)
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 2044fa961c07..314e12b2209f 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -600,16 +600,6 @@ void mark_rodata_ro(void)
 {
         unsigned long start = (unsigned long)_stext, end;
 
-#ifdef CONFIG_HOTPLUG_CPU
-        /* It must still be possible to apply SMP alternatives. */
-        if (num_possible_cpus() > 1)
-                start = (unsigned long)_etext;
-#endif
-
-#ifdef CONFIG_KPROBES
-        start = (unsigned long)__start_rodata;
-#endif
-        
         end = (unsigned long)__end_rodata;
         start = (start + PAGE_SIZE - 1) & PAGE_MASK;
         end &= PAGE_MASK;
diff --git a/arch/x86_64/mm/pageattr.c b/arch/x86_64/mm/pageattr.c
index 36377b6b8efe..7e161c698af4 100644
--- a/arch/x86_64/mm/pageattr.c
+++ b/arch/x86_64/mm/pageattr.c
@@ -13,7 +13,7 @@
 #include <asm/tlbflush.h>
 #include <asm/io.h>
 
-static inline pte_t *lookup_address(unsigned long address) 
+pte_t *lookup_address(unsigned long address)
 { 
         pgd_t *pgd = pgd_offset_k(address);
         pud_t *pud;