x86/setup: initialise CR4 before creating idle_vcpu[0]

PV vcpu initialise has CR4 seeded from mmu_cr4_features.  Adjust the order of
basic CR4 setup and creation of the idle domain, such that idle_vcpu[0] is not
wildly different from the other idle vcpus.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index c32e49fa7e7b39f5829db72f5f3a6731be90381e..ff3467035f75ad7b50c2183ab58bd2eb2d8fa053 100644 (file)
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1284,20 +1284,6 @@ void __init noreturn __start_xen(unsigned long mbi_p)
 
     timer_init();
 
-    init_idle_domain();
-
-    this_cpu(stubs.addr) = alloc_stub_page(smp_processor_id(),
-                                           &this_cpu(stubs).mfn);
-    BUG_ON(!this_cpu(stubs.addr));
-
-    trap_init();
-
-    rcu_init();
-    
-    early_time_init();
-
-    arch_init_memory();
-
     identify_cpu(&boot_cpu_data);
 
     if ( cpu_has_fxsr )
@@ -1318,6 +1304,20 @@ void __init noreturn __start_xen(unsigned long mbi_p)
     if ( cpu_has_fsgsbase )
         set_in_cr4(X86_CR4_FSGSBASE);
 
+    init_idle_domain();
+
+    this_cpu(stubs.addr) = alloc_stub_page(smp_processor_id(),
+                                           &this_cpu(stubs).mfn);
+    BUG_ON(!this_cpu(stubs.addr));
+
+    trap_init();
+
+    rcu_init();
+
+    early_time_init();
+
+    arch_init_memory();
+
     alternative_instructions();
 
     local_irq_enable();