KVM: Portability: Move memory segmentation to x86.c

This patch moves the definition of segment_descriptor_64 for AMD64 and
EM64T from kvm_main.c to segment_descriptor.h. It also adds a proper
#ifndef...#define...#endif around that header file.
The implementation of segment_base is moved from kvm_main.c to x86.c.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/kvm/segment_descriptor.h b/drivers/kvm/segment_descriptor.h
index 71fdf458619a..56fc4c873389 100644
--- a/drivers/kvm/segment_descriptor.h
+++ b/drivers/kvm/segment_descriptor.h
@@ -1,3 +1,6 @@
+#ifndef __SEGMENT_DESCRIPTOR_H
+#define __SEGMENT_DESCRIPTOR_H
+
 struct segment_descriptor {
         u16 limit_low;
         u16 base_low;
@@ -14,4 +17,13 @@ struct segment_descriptor {
         u8  base_high;
 } __attribute__((packed));
 
+#ifdef CONFIG_X86_64
+/* LDT or TSS descriptor in the GDT. 16 bytes. */
+struct segment_descriptor_64 {
+        struct segment_descriptor s;
+        u32 base_higher;
+        u32 pad_zero;
+};
 
+#endif
+#endif