mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-30 21:47:18 +00:00
d19c21429f
There is no restriction on maximum value of PCI domain. In fact,
Linux kernel uses plain atomic inc when assigning PCI domains:
drivers/pci/pci.c:static int pci_get_new_domain_nr(void)
drivers/pci/pci.c-{
drivers/pci/pci.c- return atomic_inc_return(&__domain_nr);
drivers/pci/pci.c-}
Of course, this function is called only if kernel was compiled
without PCI domain support or ACPI did not provide PCI domain.
However, QEMU still has the same restriction as us: in
set_pci_host_devaddr() QEMU checks if domain isn't greater than
0xffff. But one can argue that that's a QEMU limitation. We still
want to be able to cope with other hypervisors that don't have
this limitation (possibly).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
34 lines
1.1 KiB
XML
34 lines
1.1 KiB
XML
<domain type='qemu'>
|
|
<name>QEMUGuest1</name>
|
|
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
|
|
<memory unit='KiB'>219136</memory>
|
|
<currentMemory unit='KiB'>219136</currentMemory>
|
|
<vcpu placement='static'>1</vcpu>
|
|
<os>
|
|
<type arch='i686' machine='pc'>hvm</type>
|
|
<boot dev='hd'/>
|
|
</os>
|
|
<clock offset='utc'/>
|
|
<on_poweroff>destroy</on_poweroff>
|
|
<on_reboot>restart</on_reboot>
|
|
<on_crash>destroy</on_crash>
|
|
<devices>
|
|
<emulator>/usr/bin/qemu-system-i686</emulator>
|
|
<disk type='block' device='disk'>
|
|
<driver name='qemu' type='raw'/>
|
|
<source dev='/dev/HostVG/QEMUGuest1'/>
|
|
<target dev='hda' bus='ide'/>
|
|
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
|
|
</disk>
|
|
<controller type='usb' index='0'/>
|
|
<controller type='ide' index='0'/>
|
|
<controller type='pci' index='0' model='pci-root'/>
|
|
<interface type='user'>
|
|
<mac address='00:11:22:33:44:55'/>
|
|
<model type='rtl8139'/>
|
|
<address type='pci' domain='0x0000' bus='0x100' slot='0x05' function='0x0'/>
|
|
</interface>
|
|
<memballoon model='none'/>
|
|
</devices>
|
|
</domain>
|