Re: [SeaBIOS] hotplug failure issue on pci-bridge

2018-07-17 Thread Laszlo Ersek
On 07/16/18 11:45, Liu, Jing2 wrote: > Hi Laszlo, > > On 7/12/2018 3:29 PM, Laszlo Ersek wrote: >> On 07/12/18 07:43, Liu, Jing2 wrote: >>> Yep, thanks for the advice. >>> But hotplugging on pci-bridge is the actual use case >>> request so we would better solve and fix this. >> >> >> You can

Re: [SeaBIOS] hotplug failure issue on pci-bridge

2018-07-16 Thread Liu, Jing2
Hi Laszlo, On 7/12/2018 3:29 PM, Laszlo Ersek wrote: On 07/12/18 07:43, Liu, Jing2 wrote: Yep, thanks for the advice. But hotplugging on pci-bridge is the actual use case request so we would better solve and fix this. You can cold-plug a PCI Express Root Port in the Q35 root complex

Re: [SeaBIOS] hotplug failure issue on pci-bridge

2018-07-12 Thread Laszlo Ersek
On 07/12/18 07:43, Liu, Jing2 wrote: > Yep, thanks for the advice. > But hotplugging on pci-bridge is the actual use case > request so we would better solve and fix this. It doesn't take a bugfix, but a feature. The firmware needs to be told to reserve PCI resources in advance, in preparation for

Re: [SeaBIOS] hotplug failure issue on pci-bridge

2018-07-11 Thread Liu, Jing2
Yep, thanks for the advice. But hotplugging on pci-bridge is the actual use case request so we would better solve and fix this. On 7/11/2018 6:38 PM, Laszlo Ersek wrote: On 07/11/18 05:12, Liu, Jing2 wrote: Hi, Recently, we tried some hotplug issues. The case is: when hotplug a device (e.g.

Re: [SeaBIOS] hotplug failure issue on pci-bridge

2018-07-11 Thread Laszlo Ersek
On 07/11/18 05:12, Liu, Jing2 wrote: > Hi, > > Recently, we tried some hotplug issues. The case is: when hotplug a > device (e.g. iGPU) onto pci-bridge after guest booting up, guest reports > "BAR 2: no space for [mem size 0x4000 64bit pref]" etc. > > Seabios checks all the devices under the

[SeaBIOS] hotplug failure issue on pci-bridge

2018-07-10 Thread Liu, Jing2
Hi, Recently, we tried some hotplug issues. The case is: when hotplug a device (e.g. iGPU) onto pci-bridge after guest booting up, guest reports "BAR 2: no space for [mem size 0x4000 64bit pref]" etc. Seabios checks all the devices under the pci-bridge when qemu launching the guest, and