xen/x86: add desc_equal() to compare GDT descriptors

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>
mariux64 · Jul 19, 2012 · 5929036 · 5929036
1 parent 66a27dd
commit 5929036
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
@@ -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)
 {