x86: introduce ldt_desc type.

this patch introduces ldt_desc type to account for the differences
in the ldt descriptor in x86_64 and i386

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/asm-x86/desc_64.h b/include/asm-x86/desc_64.h
index 887393f044b17dca6d9bc75528334fab5b254b53..c49f928ed8b6963fdd9a2ca62ce9f93522f96ce1 100644 (file)
--- a/include/asm-x86/desc_64.h
+++ b/include/asm-x86/desc_64.h
@@ -113,7 +113,7 @@ static inline void store_idt(struct desc_ptr *dtr)
 static inline void set_tssldt_descriptor(void *ptr, unsigned long tss,
                                         unsigned type, unsigned size)
 {
-       struct ldttss_desc d;
+       struct ldttss_desc64 d;
 
        memset(&d, 0, sizeof(d));
        d.limit0 = size & 0xFFFF;

diff --git a/include/asm-x86/desc_defs.h b/include/asm-x86/desc_defs.h
index 9732285116afc50b64043cc7af2df60299f0f95f..09ea05243497d9bba4e1f567f3dec2ada1c8e3f3 100644 (file)
--- a/include/asm-x86/desc_defs.h
+++ b/include/asm-x86/desc_defs.h
@@ -58,7 +58,7 @@ enum {
 };
 
 // LDT or TSS descriptor in the GDT. 16 bytes.
-struct ldttss_desc {
+struct ldttss_desc64 {
        u16 limit0;
        u16 base0;
        unsigned base1 : 8, type : 5, dpl : 2, p : 1;
@@ -69,8 +69,10 @@ struct ldttss_desc {
 
 #ifdef CONFIG_X86_64
 typedef struct gate_struct64 gate_desc;
+typedef struct ldttss_desc64 ldt_desc;
 #else
 typedef struct desc_struct gate_desc;
+typedef struct desc_struct ldt_desc;
 #endif
 
 struct desc_ptr {