From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: x86/spec-ctrl: Reposition the XPTI command line parsing logic

It has ended up in the middle of the mitigation calculation logic.  Move it to
be beside the other command line parsing.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index 6145c98..1343e0a 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -201,6 +201,68 @@ static int __init parse_spec_ctrl(char *s)
 }
 custom_param("spec-ctrl", parse_spec_ctrl);
 
+int8_t __read_mostly opt_xpti = -1;
+
+static __init void xpti_init_default(uint64_t caps)
+{
+    if ( boot_cpu_data.x86_vendor == X86_VENDOR_AMD )
+        caps = ARCH_CAPABILITIES_RDCL_NO;
+
+    if ( caps & ARCH_CAPABILITIES_RDCL_NO )
+        opt_xpti = 0;
+    else
+        opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
+}
+
+static __init int parse_xpti(char *s)
+{
+    char *ss;
+    int val, rc = 0;
+
+    /* Inhibit the defaults as an explicit choice has been given. */
+    if ( opt_xpti == -1 )
+        opt_xpti = 0;
+
+    /* Interpret 'xpti' alone in its positive boolean form. */
+    if ( *s == '\0' )
+        opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
+
+    do {
+        ss = strchr(s, ',');
+        if ( ss )
+            *ss = '\0';
+
+        switch ( parse_bool(s) )
+        {
+        case 0:
+            opt_xpti = 0;
+            break;
+
+        case 1:
+            opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
+            break;
+
+        default:
+            if ( !strcmp(s, "default") )
+                opt_xpti = -1;
+            else if ( (val = parse_boolean("dom0", s, ss)) >= 0 )
+                opt_xpti = (opt_xpti & ~OPT_XPTI_DOM0) |
+                           (val ? OPT_XPTI_DOM0 : 0);
+            else if ( (val = parse_boolean("domu", s, ss)) >= 0 )
+                opt_xpti = (opt_xpti & ~OPT_XPTI_DOMU) |
+                           (val ? OPT_XPTI_DOMU : 0);
+            else
+                rc = -EINVAL;
+            break;
+        }
+
+        s = ss + 1;
+    } while ( ss );
+
+    return rc;
+}
+custom_param("xpti", parse_xpti);
+
 int8_t __read_mostly opt_pv_l1tf = -1;
 
 static __init int parse_pv_l1tf(char *s)
@@ -639,68 +701,6 @@ static __init void l1tf_calculations(uint64_t caps)
                                             : (3ul << (paddr_bits - 2))));
 }
 
-int8_t __read_mostly opt_xpti = -1;
-
-static __init void xpti_init_default(uint64_t caps)
-{
-    if ( boot_cpu_data.x86_vendor == X86_VENDOR_AMD )
-        caps = ARCH_CAPABILITIES_RDCL_NO;
-
-    if ( caps & ARCH_CAPABILITIES_RDCL_NO )
-        opt_xpti = 0;
-    else
-        opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
-}
-
-static __init int parse_xpti(char *s)
-{
-    char *ss;
-    int val, rc = 0;
-
-    /* Inhibit the defaults as an explicit choice has been given. */
-    if ( opt_xpti == -1 )
-        opt_xpti = 0;
-
-    /* Interpret 'xpti' alone in its positive boolean form. */
-    if ( *s == '\0' )
-        opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
-
-    do {
-        ss = strchr(s, ',');
-        if ( ss )
-            *ss = '\0';
-
-        switch ( parse_bool(s) )
-        {
-        case 0:
-            opt_xpti = 0;
-            break;
-
-        case 1:
-            opt_xpti = OPT_XPTI_DOM0 | OPT_XPTI_DOMU;
-            break;
-
-        default:
-            if ( !strcmp(s, "default") )
-                opt_xpti = -1;
-            else if ( (val = parse_boolean("dom0", s, ss)) >= 0 )
-                opt_xpti = (opt_xpti & ~OPT_XPTI_DOM0) |
-                           (val ? OPT_XPTI_DOM0 : 0);
-            else if ( (val = parse_boolean("domu", s, ss)) >= 0 )
-                opt_xpti = (opt_xpti & ~OPT_XPTI_DOMU) |
-                           (val ? OPT_XPTI_DOMU : 0);
-            else
-                rc = -EINVAL;
-            break;
-        }
-
-        s = ss + 1;
-    } while ( ss );
-
-    return rc;
-}
-custom_param("xpti", parse_xpti);
-
 void __init init_speculation_mitigations(void)
 {
     enum ind_thunk thunk = THUNK_DEFAULT;