Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski...

[linux-2.6-block.git] / arch / x86 / include / asm / paravirt_types.h

diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index e8c2326478c8fabc4e03c04534c599072e2598fe..7fa9e7740ba3db18d04c8405f549183edf60e8a5 100644 (file)
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -69,15 +69,9 @@ struct pv_info {
        u16 extra_user_64bit_cs;  /* __USER_CS if none */
 #endif
 
-       int paravirt_enabled;
-       unsigned int features;    /* valid only if paravirt_enabled is set */
        const char *name;
 };
 
-#define paravirt_has(x) paravirt_has_feature(PV_SUPPORTED_##x)
-/* Supported features */
-#define PV_SUPPORTED_RTC        (1<<0)
-
 struct pv_init_ops {
        /*
         * Patch may replace one of the defined code sequences with
@@ -155,10 +149,16 @@ struct pv_cpu_ops {
        void (*cpuid)(unsigned int *eax, unsigned int *ebx,
                      unsigned int *ecx, unsigned int *edx);
 
-       /* MSR, PMC and TSR operations.
-          err = 0/-EFAULT.  wrmsr returns 0/-EFAULT. */
-       u64 (*read_msr)(unsigned int msr, int *err);
-       int (*write_msr)(unsigned int msr, unsigned low, unsigned high);
+       /* Unsafe MSR operations.  These will warn or panic on failure. */
+       u64 (*read_msr)(unsigned int msr);
+       void (*write_msr)(unsigned int msr, unsigned low, unsigned high);
+
+       /*
+        * Safe MSR operations.
+        * read sets err to 0 or -EIO.  write returns 0 or -EIO.
+        */
+       u64 (*read_msr_safe)(unsigned int msr, int *err);
+       int (*write_msr_safe)(unsigned int msr, unsigned low, unsigned high);
 
        u64 (*read_pmc)(int counter);