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| author | Peter Maydell <peter.maydell@linaro.org> | 2016-07-12 12:03:29 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-07-12 12:03:29 +0100 |
| commit | c1ac514a0444cae0a822dd9a0e60ac77918c102c (patch) | |
| tree | 4f5375de003ec2848955a4878fc1e4ac22b98d73 /docs | |
| parent | 494edbf0b499e342d466e3dea334fd6ae1d56278 (diff) | |
| parent | 042ec47e6825cbea67b9ad957780204dc1d346bc (diff) | |
| download | qemu-c1ac514a0444cae0a822dd9a0e60ac77918c102c.zip qemu-c1ac514a0444cae0a822dd9a0e60ac77918c102c.tar.gz qemu-c1ac514a0444cae0a822dd9a0e60ac77918c102c.tar.bz2 | |
Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20160712-1' into staging
usb: misc fixes.
# gpg: Signature made Tue 12 Jul 2016 09:47:21 BST
# gpg: using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/pull-usb-20160712-1:
xen-usb: Fix 32bit build
usb: add storage hotplug documentation
nec-usb-xhci: set the device state to USB_STATE_DEFAULT
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/usb-storage.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/usb-storage.txt b/docs/usb-storage.txt index c5a3866..fbc1f2e 100644 --- a/docs/usb-storage.txt +++ b/docs/usb-storage.txt @@ -40,6 +40,18 @@ numbers must be continuous, i.e. for three devices you must use 0+1+2. The 0+1+5 numbering from the "usb-uas" example isn't going to work with "usb-bot". +Starting with qemu version 2.7 usb-bot and usb-uas devices can be +hotplugged. In the hotplug case they are added with "attached = +false" so the guest will not see the device until the "attached" +property is explicitly set to true. That allows to attach one or more +scsi devices before making the device visible to the guest, i.e. the +workflow looks like this: + + (1) device-add usb-bot,id=foo + (2) device-add scsi-{hd,cd},bus=foo.0,lun=0 + (2b) optionally add more devices (luns 1 ... 15). + (3) scripts/qmp/qom-set foo.attached = true + enjoy, Gerd |