// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2008 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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// Copyright (C) 2021 Philippe Gerum <rpm@xenomai.org>
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#include <linux/mm.h>
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#include <asm/xenomai/machine.h>
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static void mach_arm64_prefault(struct vm_area_struct *vma)
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{
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unsigned long addr;
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unsigned int flags;
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if ((vma->vm_flags & VM_MAYREAD)) {
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flags = (vma->vm_flags & VM_MAYWRITE) ? FAULT_FLAG_WRITE : 0;
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for (addr = vma->vm_start;
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addr != vma->vm_end; addr += PAGE_SIZE)
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handle_mm_fault(vma, addr, flags, NULL);
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}
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}
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static const char *const fault_labels[] = {
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[ARM64_TRAP_ACCESS] = "Data or instruction abort",
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[ARM64_TRAP_ALIGN] = "SP/PC alignment abort",
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[ARM64_TRAP_SEA] = "Synchronous external abort",
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[ARM64_TRAP_DEBUG] = "Debug trap",
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[ARM64_TRAP_UNDI] = "Undefined instruction",
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[ARM64_TRAP_UNDSE] = "Undefined synchronous exception",
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[ARM64_TRAP_FPE] = "FPSIMD exception",
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[ARM64_TRAP_SVE] = "SVE access trap",
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[ARM64_TRAP_BTI] = "Branch target identification trap",
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[31] = NULL
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};
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struct cobalt_machine cobalt_machine = {
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.name = "arm64",
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.init = NULL,
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.late_init = NULL,
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.cleanup = NULL,
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.prefault = mach_arm64_prefault,
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.fault_labels = fault_labels,
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};
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