Re: [PATCH v2] qemu: Assign device address before qemuDomainSupportsNicdev

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$SUBJ:

s/address before qemuDomainSupportsNicdev/addresses earlier in
qemuDomainAttachNetDevice/


On 12/17/18 6:30 AM, Wang Yechao wrote:
> qemuDomainSupportsNicdev will check the device address type on
> aarch64. If it is invoked before device address assigned, hotadd
> vhostuser interface with no address specified will get error.
> Let qemuDomainEnsurePCIAddress run before qemuDomainSupportsNicdev.
> 

I would change this to:

If code in the @actualType switch needs to have/know which PCI Address
is being used, then we must assign it earlier.  In particular a
vhost-user device needs to call qemuDomainSupportsNicdev which requires
an address to be defined.


> Signed-off-by: Wang Yechao <wang.yechao255@xxxxxxxxxx>
> ---
> v1 patch:
> https://www.redhat.com/archives/libvir-list/2018-December/msg00435.html
> 
> Changes in v2:
>  - do not modify the address type, let qemuDomainEnsurePCIAddress do it.
> ---
>  src/qemu/qemu_hotplug.c | 38 +++++++++++++++++++-------------------
>  1 file changed, 19 insertions(+), 19 deletions(-)
> 

One concern I have is when moving code is checking anything that gets
called in between the moved code for "anomalies".  The only one that the
when @actualType is VIR_DOMAIN_NET_TYPE_HOSTDEV, then
qemuDomainAttachHostDevice is called.  Still AttachHostDevice will
eventually check the address anyway, so I believe it's fine.

As long as you're OK with my commit message adjustments and no one jumps
in with something else...

Reviewed-by: John Ferlan <jferlan@xxxxxxxxxx>

John

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