x86/vmx: Use hvm_{get,set}_segment_register() rather than vmx_{get,set}_segment_register()

No functional change at this point, but this is a prerequisite for forthcoming
functional changes.

Make vmx_get_segment_register() private to vmx.c like all the other Vendor
get/set functions.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: George Dunlap <george.dunlap@citrix.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

xen/arch/x86/hvm/vmx/vmx.c

@@ -940,8 +940,8 @@ static void vmx_ctxt_switch_to(struct vcpu *v)
         .fields = { .type = 0xb, .s = 0, .dpl = 0, .p = 1, .avl = 0,    \
                     .l = 0, .db = 0, .g = 0, .pad = 0 } }).bytes)
 
-void vmx_get_segment_register(struct vcpu *v, enum x86_segment seg,
-                              struct segment_register *reg)
+static void vmx_get_segment_register(struct vcpu *v, enum x86_segment seg,
+                                     struct segment_register *reg)
 {
     unsigned long attr = 0, sel = 0, limit;
 
@@ -1444,19 +1444,19 @@ static void vmx_update_guest_cr(struct vcpu *v, unsigned int cr)
              * Need to read them all either way, as realmode reads can update
              * the saved values we'll use when returning to prot mode. */
             for ( s = 0; s < ARRAY_SIZE(reg); s++ )
-                vmx_get_segment_register(v, s, &reg[s]);
+                hvm_get_segment_register(v, s, &reg[s]);
             v->arch.hvm_vmx.vmx_realmode = realmode;
             
             if ( realmode )
             {
                 for ( s = 0; s < ARRAY_SIZE(reg); s++ )
-                    vmx_set_segment_register(v, s, &reg[s]);
+                    hvm_set_segment_register(v, s, &reg[s]);
             }
             else 
             {
                 for ( s = 0; s < ARRAY_SIZE(reg); s++ )
                     if ( !(v->arch.hvm_vmx.vm86_segment_mask & (1<<s)) )
-                        vmx_set_segment_register(
+                        hvm_set_segment_register(
                             v, s, &v->arch.hvm_vmx.vm86_saved_seg[s]);
             }
 
@@ -3847,7 +3847,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
             gdprintk(XENLOG_WARNING, "Bad vmexit (reason %#lx)\n",
                      exit_reason);
 
-            vmx_get_segment_register(v, x86_seg_ss, &ss);
+            hvm_get_segment_register(v, x86_seg_ss, &ss);
             if ( ss.attr.fields.dpl )
                 hvm_inject_hw_exception(TRAP_invalid_op,
                                         X86_EVENT_NO_EC);
@@ -3879,7 +3879,7 @@ out:
 
         gprintk(XENLOG_WARNING, "Bad rIP %lx for mode %u\n", regs->rip, mode);
 
-        vmx_get_segment_register(v, x86_seg_ss, &ss);
+        hvm_get_segment_register(v, x86_seg_ss, &ss);
         if ( ss.attr.fields.dpl )
         {
             __vmread(VM_ENTRY_INTR_INFO, &intr_info);

xen/arch/x86/hvm/vmx/vvmx.c

@@ -360,7 +360,7 @@ static int vmx_inst_check_privilege(struct cpu_user_regs *regs, int vmxop_check)
     else if ( !vcpu_2_nvmx(v).vmxon_region_pa )
         goto invalid_op;
 
-    vmx_get_segment_register(v, x86_seg_cs, &cs);
+    hvm_get_segment_register(v, x86_seg_cs, &cs);
 
     if ( (regs->eflags & X86_EFLAGS_VM) ||
          (hvm_long_mode_enabled(v) && cs.attr.fields.l == 0) )
@@ -419,13 +419,13 @@ static int decode_vmx_inst(struct cpu_user_regs *regs,
 
         if ( hvm_long_mode_enabled(v) )
         {
-            vmx_get_segment_register(v, x86_seg_cs, &seg);
+            hvm_get_segment_register(v, x86_seg_cs, &seg);
             mode_64bit = seg.attr.fields.l;
         }
 
         if ( info.fields.segment > VMX_SREG_GS )
             goto gp_fault;
-        vmx_get_segment_register(v, sreg_to_index[info.fields.segment], &seg);
+        hvm_get_segment_register(v, sreg_to_index[info.fields.segment], &seg);
         seg_base = seg.base;
 
         base = info.fields.base_reg_invalid ? 0 :

xen/include/asm-x86/hvm/vmx/vmx.h

@@ -550,8 +550,6 @@ static inline int __vmxon(u64 addr)
     return rc;
 }
 
-void vmx_get_segment_register(struct vcpu *, enum x86_segment,
-                              struct segment_register *);
 void vmx_inject_extint(int trap, uint8_t source);
 void vmx_inject_nmi(void);