D38334.id118068.diff
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D38334.id118068.diff
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	diff --git a/usr.sbin/bhyve/qemu_fwcfg.c b/usr.sbin/bhyve/qemu_fwcfg.c
	--- a/usr.sbin/bhyve/qemu_fwcfg.c
	+++ b/usr.sbin/bhyve/qemu_fwcfg.c
	@@ -130,6 +130,31 @@
	return (0);
	}

	+static int
	+qemu_fwcfg_add_item(const uint16_t architecture, const uint16_t index,
	+ const uint32_t size, void *const data)
	+{
	+ /* truncate architecture and index to their desired size */
	+ const uint16_t arch = architecture & QEMU_FWCFG_ARCHITECTURE_MASK;
	+ const uint16_t idx = index & QEMU_FWCFG_INDEX_MASK;
	+
	+ /* get pointer to item specified by selector */
	+ struct qemu_fwcfg_item *const fwcfg_item = &fwcfg_sc.items[arch][idx];
	+
	+ /* check if item is already used */
	+ if (fwcfg_item->data != NULL) {
	+ warnx("%s: qemu fwcfg item exists (architecture %s index 0x%x)",
	+ __func__, arch ? "specific" : "generic", idx);
	+ return (-1);
	+ }
	+
	+ /* save data of the item */
	+ fwcfg_item->size = size;
	+ fwcfg_item->data = data;
	+
	+ return (0);
	+}
	+
	static int
	qemu_fwcfg_register_port(const char *const name, const int port, const int size,
	const int flags, const inout_func_t handler)