x86: puts read and write cr8 into pv_cpu_ops
Glauber de Oliveira Costa [Wed, 30 Jan 2008 12:33:19 +0000 (13:33 +0100)]
This patch adds room for read and write_cr8 functions back in
pv_cpu_ops struct

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>

include/asm-x86/paravirt.h

index c56b17a..73547ac 100644 (file)
@@ -101,6 +101,11 @@ struct pv_cpu_ops {
        unsigned long (*read_cr4)(void);
        void (*write_cr4)(unsigned long);
 
+#ifdef CONFIG_X86_64
+       unsigned long (*read_cr8)(void);
+       void (*write_cr8)(unsigned long);
+#endif
+
        /* Segment descriptor handling */
        void (*load_tr_desc)(void);
        void (*load_gdt)(const struct desc_ptr *);
@@ -614,6 +619,16 @@ static inline void write_cr4(unsigned long x)
        PVOP_VCALL1(pv_cpu_ops.write_cr4, x);
 }
 
+static inline unsigned long read_cr8(void)
+{
+       return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr8);
+}
+
+static inline void write_cr8(unsigned long x)
+{
+       PVOP_VCALL1(pv_cpu_ops.write_cr8, x);
+}
+
 static inline void raw_safe_halt(void)
 {
        PVOP_VCALL0(pv_irq_ops.safe_halt);