kdump: update kdump documentation as kexec-tools-resting has been renamed kexec-tools

[safe/jmp/linux-2.6] / include / asm-x86 / msr.h

diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h
index 2c698a2..ca110ee 100644 (file)
--- a/include/asm-x86/msr.h
+++ b/include/asm-x86/msr.h
@@ -18,7 +18,7 @@ static inline unsigned long long native_read_tscp(unsigned int *aux)
        unsigned long low, high;
        asm volatile(".byte 0x0f,0x01,0xf9"
                     : "=a" (low), "=d" (high), "=c" (*aux));
-       return low | ((u64)high >> 32);
+       return low | ((u64)high << 32);
 }
 
 /*
@@ -66,7 +66,7 @@ static inline unsigned long long native_read_msr_safe(unsigned int msr,
 static inline void native_write_msr(unsigned int msr,
                                    unsigned low, unsigned high)
 {
-       asm volatile("wrmsr" : : "c" (msr), "a"(low), "d" (high));
+       asm volatile("wrmsr" : : "c" (msr), "a"(low), "d" (high) : "memory");
 }
 
 static inline int native_write_msr_safe(unsigned int msr,
@@ -81,7 +81,8 @@ static inline int native_write_msr_safe(unsigned int msr,
                     _ASM_EXTABLE(2b, 3b)
                     : "=a" (err)
                     : "c" (msr), "0" (low), "d" (high),
-                    "i" (-EFAULT));
+                      "i" (-EFAULT)
+                    : "memory");
        return err;
 }
 
@@ -150,6 +151,14 @@ static inline int wrmsr_safe(unsigned msr, unsigned low, unsigned high)
        __err;                                                  \
 })
 
+static inline int rdmsrl_safe(unsigned msr, unsigned long long *p)
+{
+       int err;
+
+       *p = native_read_msr_safe(msr, &err);
+       return err;
+}
+
 #define rdtscl(low)                                            \
        ((low) = (u32)native_read_tsc())