arm64/kvm/handle_exit.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2012,2013 - ARM Ltd
7  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
19 #include <asm/debug-monitors.h>
41 	vcpu->stat.hvc_exit_stat++;  in handle_hvc()
55 	 * "If an SMC instruction executed at Non-secure EL1 is  in handle_smc()
68  * Guest access to FP/ASIMD registers are routed to this handler only
78  * kvm_handle_wfx - handle a wait-for-interrupts or wait-for-event
86  * world-switches and schedule other host processes until there is an
93 		vcpu->stat.wfe_exit_stat++;  in kvm_handle_wfx()
97 		vcpu->stat.wfi_exit_stat++;  in kvm_handle_wfx()
108  * kvm_handle_guest_debug - handle a debug exception instruction
114  * userspace to re-inject the correct exception for guest delivery.
116  * @return: 0 (while setting vcpu->run->exit_reason), -1 for error
120 	struct kvm_run *run = vcpu->run;  in kvm_handle_guest_debug()
124 	run->exit_reason = KVM_EXIT_DEBUG;  in kvm_handle_guest_debug()
125 	run->debug.arch.hsr = esr;  in kvm_handle_guest_debug()
129 		run->debug.arch.far = vcpu->arch.fault.far_el2;  in kvm_handle_guest_debug()
137 		kvm_err("%s: un-handled case esr: %#08x\n",  in kvm_handle_guest_debug()
139 		ret = -1;  in kvm_handle_guest_debug()
150 	kvm_pr_unimpl("Unknown exception class: esr: %#08x -- %s\n",  in kvm_handle_unknown_ec()
209  * We may be single-stepping an emulated instruction. If the emulation
241 	struct kvm_run *run = vcpu->run;  in handle_exit()
246 		 * survives it will re-execute the original instruction.  in handle_exit()
262 		 * EL2 has been reset to the hyp-stub. This happens when a guest  in handle_exit()
263 		 * is pre-empted by kvm_reboot()'s shutdown call.  in handle_exit()
265 		run->exit_reason = KVM_EXIT_FAIL_ENTRY;  in handle_exit()
272 		run->exit_reason = KVM_EXIT_FAIL_ENTRY;  in handle_exit()
273 		return -EINVAL;  in handle_exit()
277 		run->exit_reason = KVM_EXIT_INTERNAL_ERROR;  in handle_exit()