diff options
| -rw-r--r-- | src/include/cpu/x86/msr.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/include/cpu/x86/msr.h b/src/include/cpu/x86/msr.h index 5ae3ddf93a..bc367d72ec 100644 --- a/src/include/cpu/x86/msr.h +++ b/src/include/cpu/x86/msr.h @@ -301,6 +301,32 @@ static inline enum mca_err_code_types mca_err_type(msr_t reg) } /** + * Helper for reading a MSR + * + * @param[in] reg The MSR. + */ +static inline uint64_t msr_read(unsigned int reg) +{ + msr_t msr = rdmsr(reg); + return (((uint64_t)msr.hi << 32) | msr.lo); +} + +/** + * Helper for writing a MSR + * + * @param[in] reg The MSR. + * @param[in] value The value to be written to the MSR. + */ +static inline void msr_write(unsigned int reg, uint64_t value) +{ + msr_t msr = { + .lo = (unsigned int)value, + .hi = (unsigned int)(value >> 32) + }; + wrmsr(reg, msr); +} + +/** * Helper for (un)setting MSR bitmasks * * @param[in] reg The MSR. |