xen/x86: add desc_equal() to compare GDT descriptors
authorDavid Vrabel <david.vrabel@citrix.com>
Mon, 9 Jul 2012 10:39:07 +0000 (11:39 +0100)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thu, 19 Jul 2012 19:51:45 +0000 (15:51 -0400)
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
[v1: Moving it to the Xen file]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/x86/xen/enlighten.c

index 0c1ab43f667257970dcaeb8296dc6b64d66ca1f1..225ffdc3c4caaf7d1ef05d53012aaf6aa56d392d 100644 (file)
@@ -539,6 +539,12 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
                BUG();
 }
 
+static inline bool desc_equal(const struct desc_struct *d1,
+                             const struct desc_struct *d2)
+{
+       return d1->a == d2->a && d1->b == d2->b;
+}
+
 static void load_TLS_descriptor(struct thread_struct *t,
                                unsigned int cpu, unsigned int i)
 {