x86/ucode: Rename hypercall-context functions

microcode_update{,_helper}() are overly generic names in a file that has
multiple update routines and helper functions contexts.

Rename microcode_update() to ucode_update_hcall() so it explicitly identifies
itself as hypercall context, and rename microcode_update_helper() to
ucode_update_hcall_cont() to make it clear it is in continuation context.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jason Andryuk <jason.andryuk@amd.com>

xen/arch/x86/cpu/microcode/core.c

@@ -467,7 +467,7 @@ struct ucode_buf {
     char buffer[];
 };
 
-static long cf_check microcode_update_helper(void *data)
+static long cf_check ucode_update_hcall_cont(void *data)
 {
     struct microcode_patch *patch = NULL;
     int ret, result;
@@ -611,8 +611,8 @@ static long cf_check microcode_update_helper(void *data)
     return ret;
 }
 
-int microcode_update(XEN_GUEST_HANDLE(const_void) buf,
-                     unsigned long len, unsigned int flags)
+int ucode_update_hcall(XEN_GUEST_HANDLE(const_void) buf,
+                       unsigned long len, unsigned int flags)
 {
     int ret;
     struct ucode_buf *buffer;
@@ -637,11 +637,11 @@ int microcode_update(XEN_GUEST_HANDLE(const_void) buf,
     buffer->flags = flags;
 
     /*
-     * Always queue microcode_update_helper() on CPU0.  Most of the logic
+     * Always queue ucode_update_hcall_cont() on CPU0.  Most of the logic
      * won't care, but the update of the Raw CPU policy wants to (re)run on
      * the BSP.
      */
-    return continue_hypercall_on_cpu(0, microcode_update_helper, buffer);
+    return continue_hypercall_on_cpu(0, ucode_update_hcall_cont, buffer);
 }
 
 /* Load a cached update to current cpu */

xen/arch/x86/include/asm/microcode.h

@@ -22,8 +22,8 @@ struct cpu_signature {
 DECLARE_PER_CPU(struct cpu_signature, cpu_sig);
 
 void microcode_set_module(unsigned int idx);
-int microcode_update(XEN_GUEST_HANDLE(const_void) buf,
-                     unsigned long len, unsigned int flags);
+int ucode_update_hcall(XEN_GUEST_HANDLE(const_void) buf,
+                       unsigned long len, unsigned int flags);
 int microcode_update_one(void);
 
 struct boot_info;

xen/arch/x86/platform_hypercall.c

@@ -313,7 +313,7 @@ ret_t do_platform_op(
 
         guest_from_compat_handle(data, op->u.microcode.data);
 
-        ret = microcode_update(data, op->u.microcode.length, 0);
+        ret = ucode_update_hcall(data, op->u.microcode.length, 0);
         break;
     }
 
@@ -323,8 +323,8 @@ ret_t do_platform_op(
 
         guest_from_compat_handle(data, op->u.microcode2.data);
 
-        ret = microcode_update(data, op->u.microcode2.length,
-                               op->u.microcode2.flags);
+        ret = ucode_update_hcall(data, op->u.microcode2.length,
+                                 op->u.microcode2.flags);
         break;
     }