5 #include <asm/msr.h>
7 #include <asm/msr-trace.h>
9 struct msr __percpu *msrs_alloc(void)  in msrs_alloc()
11 	struct msr __percpu *msrs = NULL;  in msrs_alloc()
13 	msrs = alloc_percpu(struct msr);  in msrs_alloc()
23 void msrs_free(struct msr __percpu *msrs)  in msrs_free()
30  * msr_read - Read an MSR with error handling
31  * @msr: MSR to read
39 static int msr_read(u32 msr, struct msr *m)  in msr_read()  argument
44 	err = rdmsrl_safe(msr, &val);  in msr_read()
52  * msr_write - Write an MSR with error handling
54  * @msr: MSR to write
59 static int msr_write(u32 msr, struct msr *m)  in msr_write()  argument
61 	return wrmsrl_safe(msr, m->q);  in msr_write()
64 static inline int __flip_bit(u32 msr, u8 bit, bool set)  in __flip_bit()  argument
66 	struct msr m, m1;  in __flip_bit()
72 	err = msr_read(msr, &m);  in __flip_bit()
85 	err = msr_write(msr, &m1);  in __flip_bit()
93  * msr_set_bit - Set @bit in a MSR @msr.
94  * @msr: MSR to write
100  * * > 0: Hardware accepted the MSR write.
102 int msr_set_bit(u32 msr, u8 bit)  in msr_set_bit()  argument
104 	return __flip_bit(msr, bit, true);  in msr_set_bit()
108  * msr_clear_bit - Clear @bit in a MSR @msr.
109  * @msr: MSR to write
115  * * > 0: Hardware accepted the MSR write.
117 int msr_clear_bit(u32 msr, u8 bit)  in msr_clear_bit()  argument
119 	return __flip_bit(msr, bit, false);  in msr_clear_bit()
123 void do_trace_write_msr(unsigned int msr, u64 val, int failed)  in do_trace_write_msr()  argument
125 	trace_write_msr(msr, val, failed);  in do_trace_write_msr()
130 void do_trace_read_msr(unsigned int msr, u64 val, int failed)  in do_trace_read_msr()  argument
132 	trace_read_msr(msr, val, failed);  in do_trace_read_msr()