1 files changed, 5 insertions, 288 deletions

diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c
index 2ec331e03fa9..47698756aec5 100644
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -93,294 +93,11 @@ static unsigned native_patch(u8 type, u16 clobbers, void *insns, unsigned len)
         return insn_len;
 }
 
-static unsigned long native_get_debugreg(int regno)
-{
-        unsigned long val = 0;  /* Damn you, gcc! */
-
-        switch (regno) {
-        case 0:
-                asm("movl %%db0, %0" :"=r" (val)); break;
-        case 1:
-                asm("movl %%db1, %0" :"=r" (val)); break;
-        case 2:
-                asm("movl %%db2, %0" :"=r" (val)); break;
-        case 3:
-                asm("movl %%db3, %0" :"=r" (val)); break;
-        case 6:
-                asm("movl %%db6, %0" :"=r" (val)); break;
-        case 7:
-                asm("movl %%db7, %0" :"=r" (val)); break;
-        default:
-                BUG();
-        }
-        return val;
-}
-
-static void native_set_debugreg(int regno, unsigned long value)
-{
-        switch (regno) {
-        case 0:
-                asm("movl %0,%%db0"     : /* no output */ :"r" (value));
-                break;
-        case 1:
-                asm("movl %0,%%db1"     : /* no output */ :"r" (value));
-                break;
-        case 2:
-                asm("movl %0,%%db2"     : /* no output */ :"r" (value));
-                break;
-        case 3:
-                asm("movl %0,%%db3"     : /* no output */ :"r" (value));
-                break;
-        case 6:
-                asm("movl %0,%%db6"     : /* no output */ :"r" (value));
-                break;
-        case 7:
-                asm("movl %0,%%db7"     : /* no output */ :"r" (value));
-                break;
-        default:
-                BUG();
-        }
-}
-
 void init_IRQ(void)
 {
         paravirt_ops.init_IRQ();
 }
 
-static void native_clts(void)
-{
-        asm volatile ("clts");
-}
-
-static unsigned long native_read_cr0(void)
-{
-        unsigned long val;
-        asm volatile("movl %%cr0,%0\n\t" :"=r" (val));
-        return val;
-}
-
-static void native_write_cr0(unsigned long val)
-{
-        asm volatile("movl %0,%%cr0": :"r" (val));
-}
-
-static unsigned long native_read_cr2(void)
-{
-        unsigned long val;
-        asm volatile("movl %%cr2,%0\n\t" :"=r" (val));
-        return val;
-}
-
-static void native_write_cr2(unsigned long val)
-{
-        asm volatile("movl %0,%%cr2": :"r" (val));
-}
-
-static unsigned long native_read_cr3(void)
-{
-        unsigned long val;
-        asm volatile("movl %%cr3,%0\n\t" :"=r" (val));
-        return val;
-}
-
-static void native_write_cr3(unsigned long val)
-{
-        asm volatile("movl %0,%%cr3": :"r" (val));
-}
-
-static unsigned long native_read_cr4(void)
-{
-        unsigned long val;
-        asm volatile("movl %%cr4,%0\n\t" :"=r" (val));
-        return val;
-}
-
-static unsigned long native_read_cr4_safe(void)
-{
-        unsigned long val;
-        /* This could fault if %cr4 does not exist */
-        asm("1: movl %%cr4, %0          \n"
-                "2:                             \n"
-                ".section __ex_table,\"a\"      \n"
-                ".long 1b,2b                    \n"
-                ".previous                      \n"
-                : "=r" (val): "0" (0));
-        return val;
-}
-
-static void native_write_cr4(unsigned long val)
-{
-        asm volatile("movl %0,%%cr4": :"r" (val));
-}
-
-static unsigned long native_save_fl(void)
-{
-        unsigned long f;
-        asm volatile("pushfl ; popl %0":"=g" (f): /* no input */);
-        return f;
-}
-
-static void native_restore_fl(unsigned long f)
-{
-        asm volatile("pushl %0 ; popfl": /* no output */
-                             :"g" (f)
-                             :"memory", "cc");
-}
-
-static void native_irq_disable(void)
-{
-        asm volatile("cli": : :"memory");
-}
-
-static void native_irq_enable(void)
-{
-        asm volatile("sti": : :"memory");
-}
-
-static void native_safe_halt(void)
-{
-        asm volatile("sti; hlt": : :"memory");
-}
-
-static void native_halt(void)
-{
-        asm volatile("hlt": : :"memory");
-}
-
-static void native_wbinvd(void)
-{
-        asm volatile("wbinvd": : :"memory");
-}
-
-static unsigned long long native_read_msr(unsigned int msr, int *err)
-{
-        unsigned long long val;
-
-        asm volatile("2: rdmsr ; xorl %0,%0\n"
-                     "1:\n\t"
-                     ".section .fixup,\"ax\"\n\t"
-                     "3:  movl %3,%0 ; jmp 1b\n\t"
-                     ".previous\n\t"
-                     ".section __ex_table,\"a\"\n"
-                     "   .align 4\n\t"
-                     "   .long  2b,3b\n\t"
-                     ".previous"
-                     : "=r" (*err), "=A" (val)
-                     : "c" (msr), "i" (-EFAULT));
-
-        return val;
-}
-
-static int native_write_msr(unsigned int msr, unsigned long long val)
-{
-        int err;
-        asm volatile("2: wrmsr ; xorl %0,%0\n"
-                     "1:\n\t"
-                     ".section .fixup,\"ax\"\n\t"
-                     "3:  movl %4,%0 ; jmp 1b\n\t"
-                     ".previous\n\t"
-                     ".section __ex_table,\"a\"\n"
-                     "   .align 4\n\t"
-                     "   .long  2b,3b\n\t"
-                     ".previous"
-                     : "=a" (err)
-                     : "c" (msr), "0" ((u32)val), "d" ((u32)(val>>32)),
-                       "i" (-EFAULT));
-        return err;
-}
-
-static unsigned long long native_read_tsc(void)
-{
-        unsigned long long val;
-        asm volatile("rdtsc" : "=A" (val));
-        return val;
-}
-
-static unsigned long long native_read_pmc(void)
-{
-        unsigned long long val;
-        asm volatile("rdpmc" : "=A" (val));
-        return val;
-}
-
-static void native_load_tr_desc(void)
-{
-        asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
-}
-
-static void native_load_gdt(const struct Xgt_desc_struct *dtr)
-{
-        asm volatile("lgdt %0"::"m" (*dtr));
-}
-
-static void native_load_idt(const struct Xgt_desc_struct *dtr)
-{
-        asm volatile("lidt %0"::"m" (*dtr));
-}
-
-static void native_store_gdt(struct Xgt_desc_struct *dtr)
-{
-        asm ("sgdt %0":"=m" (*dtr));
-}
-
-static void native_store_idt(struct Xgt_desc_struct *dtr)
-{
-        asm ("sidt %0":"=m" (*dtr));
-}
-
-static unsigned long native_store_tr(void)
-{
-        unsigned long tr;
-        asm ("str %0":"=r" (tr));
-        return tr;
-}
-
-static void native_load_tls(struct thread_struct *t, unsigned int cpu)
-{
-#define C(i) get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]
-        C(0); C(1); C(2);
-#undef C
-}
-
-static inline void native_write_dt_entry(void *dt, int entry, u32 entry_low, u32 entry_high)
-{
-        u32 *lp = (u32 *)((char *)dt + entry*8);
-        lp[0] = entry_low;
-        lp[1] = entry_high;
-}
-
-static void native_write_ldt_entry(void *dt, int entrynum, u32 low, u32 high)
-{
-        native_write_dt_entry(dt, entrynum, low, high);
-}
-
-static void native_write_gdt_entry(void *dt, int entrynum, u32 low, u32 high)
-{
-        native_write_dt_entry(dt, entrynum, low, high);
-}
-
-static void native_write_idt_entry(void *dt, int entrynum, u32 low, u32 high)
-{
-        native_write_dt_entry(dt, entrynum, low, high);
-}
-
-static void native_load_esp0(struct tss_struct *tss,
-                                      struct thread_struct *thread)
-{
-        tss->esp0 = thread->esp0;
-
-        /* This can only happen when SEP is enabled, no need to test "SEP"arately */
-        if (unlikely(tss->ss1 != thread->sysenter_cs)) {
-                tss->ss1 = thread->sysenter_cs;
-                wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
-        }
-}
-
-static void native_io_delay(void)
-{
-        asm volatile("outb %al,$0x80");
-}
-
 static void native_flush_tlb(void)
 {
         __native_flush_tlb();
@@ -517,8 +234,8 @@ struct paravirt_ops paravirt_ops = {
         .safe_halt = native_safe_halt,
         .halt = native_halt,
         .wbinvd = native_wbinvd,
-        .read_msr = native_read_msr,
-        .write_msr = native_write_msr,
+        .read_msr = native_read_msr_safe,
+        .write_msr = native_write_msr_safe,
         .read_tsc = native_read_tsc,
         .read_pmc = native_read_pmc,
         .get_scheduled_cycles = native_read_tsc,
@@ -531,9 +248,9 @@ struct paravirt_ops paravirt_ops = {
         .store_idt = native_store_idt,
         .store_tr = native_store_tr,
         .load_tls = native_load_tls,
-        .write_ldt_entry = native_write_ldt_entry,
-        .write_gdt_entry = native_write_gdt_entry,
-        .write_idt_entry = native_write_idt_entry,
+        .write_ldt_entry = write_dt_entry,
+        .write_gdt_entry = write_dt_entry,
+        .write_idt_entry = write_dt_entry,
         .load_esp0 = native_load_esp0,
 
         .set_iopl_mask = native_set_iopl_mask,