kernel/cpu/tsx.c

33 	 * Ensure TSX support is not enumerated in CPUID.  in tsx_disable()
53 	 * Ensure TSX support is enumerated in CPUID.  in tsx_enable()
73  * First of all, there's a CPUID bit: X86_FEATURE_RTM_ALWAYS_ABORT
81  * the MSR is present only when *two* CPUID bits are set:
89  * CPUID bit X86_FEATURE_RTM_ALWAYS_ABORT set and for those the same strategy
96  * which, when done, may cause for the X86_FEATURE_RTM_ALWAYS_ABORT CPUID
100  * cause for the supported CPUID feature bits to get re-detected and, if
103  * short: the kernel doesn't modify CPUID feature bits after booting.
113 	 * MSR_TFA_TSX_CPUID_CLEAR bit is only present when both CPUID  in tsx_clear_cpuid()
166 	 * Hardware will always abort a TSX transaction when the CPUID bit  in tsx_init()
168 	 * CPUID.RTM and CPUID.HLE bits. Clear them here.  in tsx_init()
222 		 * tsx_disable() will change the state of the RTM and HLE CPUID  in tsx_init()
239 		 * tsx_enable() will change the state of the RTM and HLE CPUID  in tsx_init()