kvm/x86_64/debug_regs.c

3  * KVM guest debug register tests
18 /* For testing data access debug BP */
80 	struct kvm_guest_debug debug;
104 	memset(&debug, 0, sizeof(debug));
105 	debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP;
106 	vcpu_guest_debug_set(vcpu, &debug);
109 		    run->debug.arch.exception == BP_VECTOR &&
110 		    run->debug.arch.pc == CAST_TO_RIP(sw_bp),
112 		    run->exit_reason, run->debug.arch.exception,
113 		    run->debug.arch.pc, CAST_TO_RIP(sw_bp));
118 		memset(&debug, 0, sizeof(debug));
119 		debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
120 		debug.arch.debugreg[i] = CAST_TO_RIP(hw_bp);
121 		debug.arch.debugreg[7] = 0x400 | (1UL << (2*i+1));
122 		vcpu_guest_debug_set(vcpu, &debug);
126 			    run->debug.arch.exception == DB_VECTOR &&
127 			    run->debug.arch.pc == CAST_TO_RIP(hw_bp) &&
128 			    run->debug.arch.dr6 == target_dr6,
131 			    i, run->exit_reason, run->debug.arch.exception,
132 			    run->debug.arch.pc, CAST_TO_RIP(hw_bp),
133 			    run->debug.arch.dr6, target_dr6);
140 		memset(&debug, 0, sizeof(debug));
141 		debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
142 		debug.arch.debugreg[i] = CAST_TO_RIP(guest_value);
143 		debug.arch.debugreg[7] = 0x00000400 | (1UL << (2*i+1)) |
145 		vcpu_guest_debug_set(vcpu, &debug);
149 			    run->debug.arch.exception == DB_VECTOR &&
150 			    run->debug.arch.pc == CAST_TO_RIP(write_data) &&
151 			    run->debug.arch.dr6 == target_dr6,
154 			    i, run->exit_reason, run->debug.arch.exception,
155 			    run->debug.arch.pc, CAST_TO_RIP(write_data),
156 			    run->debug.arch.dr6, target_dr6);
168 		memset(&debug, 0, sizeof(debug));
169 		debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |
171 		debug.arch.debugreg[7] = 0x00000400;
172 		vcpu_guest_debug_set(vcpu, &debug);
175 			    run->debug.arch.exception == DB_VECTOR &&
176 			    run->debug.arch.pc == target_rip &&
177 			    run->debug.arch.dr6 == target_dr6,
180 			    i, run->exit_reason, run->debug.arch.exception,
181 			    run->debug.arch.pc, target_rip, run->debug.arch.dr6,
186 	memset(&debug, 0, sizeof(debug));
187 	debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
188 	debug.arch.debugreg[7] = 0x400 | DR7_GD;
189 	vcpu_guest_debug_set(vcpu, &debug);
193 		    run->debug.arch.exception == DB_VECTOR &&
194 		    run->debug.arch.pc == CAST_TO_RIP(bd_start) &&
195 		    run->debug.arch.dr6 == target_dr6,
198 			    run->exit_reason, run->debug.arch.exception,
199 			    run->debug.arch.pc, target_rip, run->debug.arch.dr6,
202 	/* Disable all debug controls, run to the end */
203 	memset(&debug, 0, sizeof(debug));
204 	vcpu_guest_debug_set(vcpu, &debug);