From 73f46fef7400dc1dc6cb5e8914d3d1b3b673459f Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 15 Aug 2019 15:14:28 +0100 Subject: [PATCH] usb: reword -usb command-line option and mention xHCI The -usb section of the man page is not very clear on what exactly -usb does and fails to mention xHCI as a modern alternative (-device nec-usb-xhci). Signed-off-by: Stefan Hajnoczi Reviewed-by: Thomas Huth Message-id: 20190815141428.29080-1-stefanha@redhat.com Signed-off-by: Gerd Hoffmann --- qemu-options.hx | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/qemu-options.hx b/qemu-options.hx index 9621e934c0..1fb362f06f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1436,12 +1436,15 @@ STEXI ETEXI DEF("usb", 0, QEMU_OPTION_usb, - "-usb enable the USB driver (if it is not used by default yet)\n", + "-usb enable on-board USB host controller (if not enabled by default)\n", QEMU_ARCH_ALL) STEXI @item -usb @findex -usb -Enable the USB driver (if it is not used by default yet). +Enable USB emulation on machine types with an on-board USB host controller (if +not enabled by default). Note that on-board USB host controllers may not +support USB 3.0. In this case @option{-device qemu-xhci} can be used instead +on machines with PCI. ETEXI DEF("usbdevice", HAS_ARG, QEMU_OPTION_usbdevice,