arm64/kvm/stacktrace.c

1 /* SPDX-License-Identifier: GPL-2.0-only */
7  *   1) Non-protected nVHE mode - the host can directly access the
12  *   2) pKVM (protected nVHE) mode - the host cannot directly access
28 	unsigned long low = (unsigned long)stacktrace_info->overflow_stack_base;  in stackinfo_get_overflow()
52 	unsigned long low = (unsigned long)stacktrace_info->stack_base;  in stackinfo_get_hyp()
73  * kvm_nvhe_stack_kern_va - Convert KVM nVHE HYP stack addresses to a kernel VAs
76  * allow for guard pages below the stack. Consequently, the fixed offset address
77  * translation macros won't work here.
102 	*addr = *addr - stack_hyp.low + stack_kern.low;  in kvm_nvhe_stack_kern_va()
107  * Convert a KVN nVHE HYP frame record address to a kernel VA
120 	if (!kvm_nvhe_stack_kern_record_va(&state->fp))  in unwind_next()
121 		return -EINVAL;  in unwind_next()
132 		if (!consume_entry(cookie, state->pc))  in unwind()
141  * kvm_nvhe_dump_backtrace_entry - Symbolize and print an nVHE backtrace entry
143  * @arg    : the hypervisor offset, used for address translation
148 	unsigned long va_mask = GENMASK_ULL(vabits_actual - 1, 0);  in kvm_nvhe_dump_backtrace_entry()
165 	kvm_err("---[ end nVHE call trace ]---\n");  in kvm_nvhe_dump_backtrace_end()
169  * hyp_dump_backtrace - Dump the non-protected nVHE backtrace.
171  * @hyp_offset: hypervisor offset, used for address translation.
173  * The host can directly access HYP stack pages in non-protected
192 	kvm_nvhe_unwind_init(&state, stacktrace_info->fp, stacktrace_info->pc);  in hyp_dump_backtrace()
204  * pkvm_dump_backtrace - Dump the protected nVHE HYP backtrace.
206  * @hyp_offset: hypervisor offset, used for address translation.
235  * kvm_nvhe_dump_backtrace - Dump KVM nVHE hypervisor backtrace.
237  * @hyp_offset: hypervisor offset, used for address translation.