VCPU_REGS_RBX
unsigned bx = reg_read(ctxt, VCPU_REGS_RBX);
(u32) reg_read(ctxt, VCPU_REGS_RBX);
tss->bx = reg_read(ctxt, VCPU_REGS_RBX);
*reg_write(ctxt, VCPU_REGS_RBX) = tss->bx;
tss->ebx = reg_read(ctxt, VCPU_REGS_RBX);
*reg_write(ctxt, VCPU_REGS_RBX) = tss->ebx;
*reg_write(ctxt, VCPU_REGS_RBX) = ebx;
reg_read(ctxt, VCPU_REGS_RBX) +
ghcb_set_rbx(ghcb, vcpu->arch.regs[VCPU_REGS_RBX]);
vcpu->arch.regs[VCPU_REGS_RBX] = kvm_ghcb_get_rbx_if_valid(svm);
vcpu->arch.regs[VCPU_REGS_RBX] = vcpu->run->snp_req_certs.npages;
data_npages = vcpu->arch.regs[VCPU_REGS_RBX];
cpuid_value = vcpu->arch.regs[VCPU_REGS_RBX];
save->rbx = svm->vcpu.arch.regs[VCPU_REGS_RBX];
vcpu->arch.regs[VCPU_REGS_RBX]);
BIT_ULL(VCPU_REGS_RBX) | \