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xen/x86: add desc_equal() to compare GDT descriptors
author
David Vrabel
<david.vrabel@citrix.com>
Mon, 9 Jul 2012 10:39:07 +0000
(11:39 +0100)
committer
Konrad 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
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diff --git
a/arch/x86/xen/enlighten.c
b/arch/x86/xen/enlighten.c
index
0c1ab43
..
225ffdc
100644
(file)
--- 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)
{