----- Original Message -----
On Mon, Sep 19, 2011 at 01:02:59PM +0300, Michael
S. Tsirkin wrote:
On Mon, Sep 19, 2011 at 12:57:33PM +0300, Gleb
On Mon, Sep 19, 2011 at 03:27:38AM -0400, Amos
> Only func 0 is registered to guest driver (we can
> only found func 0 in slot->funcs list of driver),
> the other functions could not be cleaned when
> hot-removing the whole slot. This patch adds
> device per function in ACPI DSDT tables.
You can't unplug a single function. Guest surely knows that.
Looking at guest code, it's clear that
at least a Linux guest doesn't know that.
acpiphp_disable_slot function appears to eject all functions.
> > Have tested with linux/winxp/win7,
> > single/multiple function device, they are all fine.
Does not work for me (FC12 guest).
what's your problem? only func 0 can be added?
I hotplug/hot-remove device by this script(add func 1~7, then add func 0):
for i in `seq 1 7` 0;do
qemu-img create /tmp/resize$j$i.qcow2 10M -f qcow2
echo drive_add 0x$j.$i id=drv$j$i,if=none,file=/tmp/resize$j$i.qcow2 | nc -U /tmp/a
echo device_add virtio-blk-pci,id=dev$j$i,drive=drv$j$i,addr=0x$j.$i,multifunction=on |
nc -U /tmp/monitor
echo device_del dev60 | nc -U /tmp/monitor
As mentioned previously, Linux driver
looks for function 0 when injection request is seen (see
function in acpiphp_glue.c).
> > What was not fine before?
When hot-removing multifunc device, only func 0 can be removed from guest.