KVM: Use x86's segment descriptor struct instead of private definition

The x86 desc_struct unification allows us to remove segment_descriptor.h.

Signed-off-by: Avi Kivity <avi@qumranet.com>

3 files changed, 8 insertions, 39 deletions

diff --git a/arch/x86/kvm/segment_descriptor.h b/arch/x86/kvm/segment_descriptor.h
deleted file mode 100644
index 56fc4c87338..00000000000
--- a/arch/x86/kvm/segment_descriptor.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef __SEGMENT_DESCRIPTOR_H
-#define __SEGMENT_DESCRIPTOR_H
-
-struct segment_descriptor {
-        u16 limit_low;
-        u16 base_low;
-        u8  base_mid;
-        u8  type : 4;
-        u8  system : 1;
-        u8  dpl : 2;
-        u8  present : 1;
-        u8  limit_high : 4;
-        u8  avl : 1;
-        u8  long_mode : 1;
-        u8  default_op : 1;
-        u8  granularity : 1;
-        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
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 2d5ccec3f9e..f46ad03c252 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -17,7 +17,6 @@
 
 #include "irq.h"
 #include "vmx.h"
-#include "segment_descriptor.h"
 #include "mmu.h"
 
 #include <linux/kvm_host.h>
@@ -388,7 +387,7 @@ static void reload_tss(void)
          * VT restores TR but not its size.  Useless.
          */
         struct descriptor_table gdt;
-        struct segment_descriptor *descs;
+        struct desc_struct *descs;
 
         get_gdt(&gdt);
         descs = (void *)gdt.base;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b7c32f63671..a063f449a12 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -15,7 +15,6 @@
  */
 
 #include <linux/kvm_host.h>
-#include "segment_descriptor.h"
 #include "irq.h"
 #include "mmu.h"
 
@@ -29,6 +28,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/msr.h>
+#include <asm/desc.h>
 
 #define MAX_IO_MSRS 256
 #define CR0_RESERVED_BITS                                               \
@@ -94,7 +94,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 unsigned long segment_base(u16 selector)
 {
         struct descriptor_table gdt;
-        struct segment_descriptor *d;
+        struct desc_struct *d;
         unsigned long table_base;
         unsigned long v;
 
@@ -110,13 +110,12 @@ unsigned long segment_base(u16 selector)
                 asm("sldt %0" : "=g"(ldt_selector));
                 table_base = segment_base(ldt_selector);
         }
-        d = (struct segment_descriptor *)(table_base + (selector & ~7));
-        v = d->base_low | ((unsigned long)d->base_mid << 16) |
-                ((unsigned long)d->base_high << 24);
+        d = (struct desc_struct *)(table_base + (selector & ~7));
+        v = d->base0 | ((unsigned long)d->base1 << 16) |
+                ((unsigned long)d->base2 << 24);
 #ifdef CONFIG_X86_64
-        if (d->system == 0 && (d->type == 2 || d->type == 9 || d->type == 11))
-                v |= ((unsigned long) \
-                      ((struct segment_descriptor_64 *)d)->base_higher) << 32;
+        if (d->s == 0 && (d->type == 2 || d->type == 9 || d->type == 11))
+                v |= ((unsigned long)((struct ldttss_desc64 *)d)->base3) << 32;
 #endif
         return v;
 }