31 union hv_ghcb {  union
70 	union hv_ghcb *hv_ghcb;  in hv_ghcb_hypercall()  local
82 	hv_ghcb = (union hv_ghcb *)*ghcb_base;  in hv_ghcb_hypercall()
83 	if (!hv_ghcb) {  in hv_ghcb_hypercall()
88 	hv_ghcb->ghcb.protocol_version = GHCB_PROTOCOL_MAX;  in hv_ghcb_hypercall()
89 	hv_ghcb->ghcb.ghcb_usage = GHCB_USAGE_HYPERV_CALL;  in hv_ghcb_hypercall()
91 	hv_ghcb->hypercall.outputgpa = (u64)output;  in hv_ghcb_hypercall()
92 	hv_ghcb->hypercall.hypercallinput.asuint64 = 0;  in hv_ghcb_hypercall()
93 	hv_ghcb->hypercall.hypercallinput.callcode = control;  in hv_ghcb_hypercall()
96 		memcpy(hv_ghcb->hypercall.hypercalldata, input, input_size);  in hv_ghcb_hypercall()
100 	hv_ghcb->ghcb.ghcb_usage = 0xffffffff;  in hv_ghcb_hypercall()
101 	memset(hv_ghcb->ghcb.save.valid_bitmap, 0,  in hv_ghcb_hypercall()
102 	       sizeof(hv_ghcb->ghcb.save.valid_bitmap));  in hv_ghcb_hypercall()
104 	status = hv_ghcb->hypercall.hypercalloutput.callstatus;  in hv_ghcb_hypercall()
187 	union hv_ghcb *hv_ghcb;  in hv_ghcb_msr_write()  local
198 	hv_ghcb = (union hv_ghcb *)*ghcb_base;  in hv_ghcb_msr_write()
199 	if (!hv_ghcb) {  in hv_ghcb_msr_write()
204 	ghcb_set_rcx(&hv_ghcb->ghcb, msr);  in hv_ghcb_msr_write()
205 	ghcb_set_rax(&hv_ghcb->ghcb, lower_32_bits(value));  in hv_ghcb_msr_write()
206 	ghcb_set_rdx(&hv_ghcb->ghcb, upper_32_bits(value));  in hv_ghcb_msr_write()
208 	if (hv_ghcb_hv_call(&hv_ghcb->ghcb, SVM_EXIT_MSR, 1, 0))  in hv_ghcb_msr_write()
216 	union hv_ghcb *hv_ghcb;  in hv_ghcb_msr_read()  local
221 	BUILD_BUG_ON(sizeof(union hv_ghcb) != HV_HYP_PAGE_SIZE);  in hv_ghcb_msr_read()
230 	hv_ghcb = (union hv_ghcb *)*ghcb_base;  in hv_ghcb_msr_read()
231 	if (!hv_ghcb) {  in hv_ghcb_msr_read()
236 	ghcb_set_rcx(&hv_ghcb->ghcb, msr);  in hv_ghcb_msr_read()
237 	if (hv_ghcb_hv_call(&hv_ghcb->ghcb, SVM_EXIT_MSR, 0, 0))  in hv_ghcb_msr_read()
240 		*value = (u64)lower_32_bits(hv_ghcb->ghcb.save.rax)  in hv_ghcb_msr_read()
241 			| ((u64)lower_32_bits(hv_ghcb->ghcb.save.rdx) << 32);  in hv_ghcb_msr_read()