Function lapic_mmio_read

freebsd/amd64/vmm/vmm_lapic.c:221–243

}

int
lapic_mmio_read(void *vm, int cpu, uint64_t gpa, uint64_t *rval, int size,
		void *arg)
{
	int error;
	uint64_t off;
	struct vlapic *vlapic;

	off = gpa - DEFAULT_APIC_BASE;

	/*
	 * Memory mapped local apic accesses should be aligned on a
	 * 16-byte boundary.  They are also suggested to be 4 bytes
	 * wide, alas not all OSes follow suggestions.
	 */
	off &= ~3;
	if (off & 0xf)
		return (EINVAL);

	vlapic = vm_lapic(vm, cpu);
	error = vlapic_read(vlapic, 1, off, rval, arg);
	return (error);
}