1 /* msr tests */
6 #include "msr.h"
12  * 2. Custom: by providing command line arguments it is possible to test any MSR and value
14  *		1. msr index as a base 16 number
30 #define MSR_TEST(msr, val, ro)	\  argument
31 	{ .index = msr, .name = #msr, .value = val, .is_64bit_only = false, .keep = ro }
32 #define MSR_TEST_ONLY64(msr, val, ro)	\  argument
33 	{ .index = msr, .name = #msr, .value = val, .is_64bit_only = true, .keep = ro }
55 static void __test_msr_rw(u32 msr, const char *name, unsigned long long val,  in __test_msr_rw()  argument
60 	orig = rdmsr(msr);  in __test_msr_rw()
66 	if (msr == MSR_EFER)  in __test_msr_rw()
71 	wrmsr(msr, val);  in __test_msr_rw()
72 	r = rdmsr(msr);  in __test_msr_rw()
73 	wrmsr(msr, orig);  in __test_msr_rw()
83 static void test_msr_rw(u32 msr, const char *name, unsigned long long val)  in test_msr_rw()  argument
85 	__test_msr_rw(msr, name, val, 0);  in test_msr_rw()
88 static void test_wrmsr(u32 msr, const char *name, unsigned long long val)  in test_wrmsr()  argument
90 	unsigned char vector = wrmsr_safe(msr, val);  in test_wrmsr()
97 static void test_wrmsr_fault(u32 msr, const char *name, unsigned long long val)  in test_wrmsr_fault()  argument
99 	unsigned char vector = wrmsr_safe(msr, val);  in test_wrmsr_fault()
106 static void test_rdmsr_fault(u32 msr, const char *name)  in test_rdmsr_fault()  argument
109 	unsigned char vector = rdmsr_safe(msr, &ignored);  in test_rdmsr_fault()
115 static void test_wrmsr_fep_fault(u32 msr, const char *name,  in test_wrmsr_fep_fault()  argument
118 	unsigned char vector = wrmsr_fep_safe(msr, val);  in test_wrmsr_fep_fault()
125 static void test_msr(struct msr_info *msr, bool is_64bit_host)  in test_msr()  argument
127 	if (is_64bit_host || !msr->is_64bit_only) {  in test_msr()
128 		__test_msr_rw(msr->index, msr->name, msr->value, msr->keep);  in test_msr()
134 		if (msr->is_64bit_only &&  in test_msr()
135 		    msr->value == addr_64)  in test_msr()
136 			test_wrmsr_fault(msr->index, msr->name, NONCANONICAL);  in test_msr()
138 		test_wrmsr_fault(msr->index, msr->name, msr->value);  in test_msr()
139 		test_rdmsr_fault(msr->index, msr->name);  in test_msr()
148 	snprintf(msr_name, sizeof(msr_name), "MSR:0x%x", index);  in test_custom_msr()
150 	struct msr_info msr = {  in test_custom_msr()  local
155 	test_msr(&msr, is_64bit_host);  in test_custom_msr()
184 		 * STATUS MSRs can only be written with '0' (to clear the MSR),  in test_mce_msrs()
213 	 * without jumping to a new base address), as the last unclaimed MSR is  in test_mce_msrs()
244 		snprintf(msr_name, sizeof(msr_name), "x2APIC MSR 0x%x", index);  in __test_x2apic_msrs()
353 	 * If the user provided an MSR+value, test exactly that and skip all  in main()