x86: change write_idt_entry signature

this patch changes write_idt_entry signature. It now takes a gate_desc
instead of the a and b parameters. It will allow it to be later unified
between i386 and x86_64.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
CC: Zachary Amsden <zach@vmware.com>
CC: Jeremy Fitzhardinge <Jeremy.Fitzhardinge.citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 13 insertions, 6 deletions

diff --git a/include/asm-x86/desc_32.h b/include/asm-x86/desc_32.h
index 77f1e5a4ad7c..54b2314f2ddf 100644
--- a/include/asm-x86/desc_32.h
+++ b/include/asm-x86/desc_32.h
@@ -70,9 +70,15 @@ static inline void pack_gate(gate_desc *gate,
 
 #define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
 #define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
+#define write_idt_entry(dt, entry, g) native_write_idt_entry(dt, entry, g)
 #endif
 
+static inline void native_write_idt_entry(gate_desc *idt, int entry,
+                                          const gate_desc *gate)
+{
+        memcpy(&idt[entry], gate, sizeof(*gate));
+}
+
 static inline void write_dt_entry(struct desc_struct *dt,
                                   int entry, u32 entry_low, u32 entry_high)
 {
@@ -142,7 +148,7 @@ static inline void _set_gate(int gate, unsigned int type, void *addr, unsigned s
 {
         gate_desc g;
         pack_gate(&g, (unsigned long)addr, seg, type, 0);
-        write_idt_entry(idt_table, gate, g.a, g.b);
+        write_idt_entry(idt_table, gate, &g);
 }
 
 static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, const void *addr)
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 0333fb6988b5..86a9d7b0920f 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -17,6 +17,7 @@
 #include <linux/types.h>
 #include <linux/cpumask.h>
 #include <asm/kmap_types.h>
+#include <asm/desc_defs.h>
 
 struct page;
 struct thread_struct;
@@ -99,8 +100,8 @@ struct pv_cpu_ops {
                                 int entrynum, u32 low, u32 high);
         void (*write_gdt_entry)(struct desc_struct *,
                                 int entrynum, u32 low, u32 high);
-        void (*write_idt_entry)(struct desc_struct *,
-                                int entrynum, u32 low, u32 high);
+        void (*write_idt_entry)(gate_desc *,
+                                int entrynum, const gate_desc *gate);
         void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t);
 
         void (*set_iopl_mask)(unsigned mask);
@@ -667,9 +668,9 @@ static inline void write_gdt_entry(void *dt, int entry, u32 low, u32 high)
 {
         PVOP_VCALL4(pv_cpu_ops.write_gdt_entry, dt, entry, low, high);
 }
-static inline void write_idt_entry(void *dt, int entry, u32 low, u32 high)
+static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
 {
-        PVOP_VCALL4(pv_cpu_ops.write_idt_entry, dt, entry, low, high);
+        PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g);
 }
 static inline void set_iopl_mask(unsigned mask)
 {