Re: Guests wont start with 15 pcie-root-port devices
On Mon, 15 Nov 2021 11:57:43 -0500 Brian Rak wrote: > Will this fix make it into 6.2? yes, it was just merged 2aa1842d6d79..7e6055c99f2f1f PS: Native PCIe hotplug fixes from Gerd were merged as well, so if you'd like to use native hotplug, use --global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off to turn off ACPI hotplug. > On 11/12/2021 3:51 PM, Igor Mammedov wrote: > > On Fri, 12 Nov 2021 17:53:42 + > > Daniel P. Berrangé wrote: > > > >> On Fri, Nov 12, 2021 at 12:35:07PM -0500, Brian Rak wrote: > >>> In 6.1, a guest with 15 empty pcie-root-port devices will not boot > >>> properly > >>> - it just hangs on "Guest has not initialized the display (yet).". As > >>> soon > >>> as I remove the last pcie-root-port, the guest begins starting up > >>> normally. > >> Yes, QEMU 6.1 has a regression > >> > >>https://gitlab.com/qemu-project/qemu/-/issues/641 > >> > >> > >>> commit e2a6290aab578b2170c1f5909fa556385dc0d820 > >>> Author: Marcel Apfelbaum > >>> Date: Mon Aug 2 12:00:57 2021 +0300 > >>> > >>> hw/pcie-root-port: Fix hotplug for PCI devices requiring IO > >>> > >>> Although I can't say I really understand why that commit triggered it. > >> It caused the firmware to always allocate I/O space for every port > >> and there's limited total I/O space, so it runs out at 15 devices. > > alternatively instead of reverting to native PCIe hotplug as in the issue > > Daniel's mentioned, you can apply following fix > > https://patchew.org/QEMU/2022110857.3116853-1-imamm...@redhat.com/ > > > >> Regards, > >> Daniel >
Re: Guests wont start with 15 pcie-root-port devices
Will this fix make it into 6.2? On 11/12/2021 3:51 PM, Igor Mammedov wrote: On Fri, 12 Nov 2021 17:53:42 + Daniel P. Berrangé wrote: On Fri, Nov 12, 2021 at 12:35:07PM -0500, Brian Rak wrote: In 6.1, a guest with 15 empty pcie-root-port devices will not boot properly - it just hangs on "Guest has not initialized the display (yet).". As soon as I remove the last pcie-root-port, the guest begins starting up normally. Yes, QEMU 6.1 has a regression https://gitlab.com/qemu-project/qemu/-/issues/641 commit e2a6290aab578b2170c1f5909fa556385dc0d820 Author: Marcel Apfelbaum Date: Mon Aug 2 12:00:57 2021 +0300 hw/pcie-root-port: Fix hotplug for PCI devices requiring IO Although I can't say I really understand why that commit triggered it. It caused the firmware to always allocate I/O space for every port and there's limited total I/O space, so it runs out at 15 devices. alternatively instead of reverting to native PCIe hotplug as in the issue Daniel's mentioned, you can apply following fix https://patchew.org/QEMU/2022110857.3116853-1-imamm...@redhat.com/ Regards, Daniel
Re: Guests wont start with 15 pcie-root-port devices
On Fri, 12 Nov 2021 17:53:42 + Daniel P. Berrangé wrote: > On Fri, Nov 12, 2021 at 12:35:07PM -0500, Brian Rak wrote: > > In 6.1, a guest with 15 empty pcie-root-port devices will not boot properly > > - it just hangs on "Guest has not initialized the display (yet).". As soon > > as I remove the last pcie-root-port, the guest begins starting up normally. > > > > Yes, QEMU 6.1 has a regression > > https://gitlab.com/qemu-project/qemu/-/issues/641 > > > > commit e2a6290aab578b2170c1f5909fa556385dc0d820 > > Author: Marcel Apfelbaum > > Date: Mon Aug 2 12:00:57 2021 +0300 > > > > hw/pcie-root-port: Fix hotplug for PCI devices requiring IO > > > > Although I can't say I really understand why that commit triggered it. > > It caused the firmware to always allocate I/O space for every port > and there's limited total I/O space, so it runs out at 15 devices. alternatively instead of reverting to native PCIe hotplug as in the issue Daniel's mentioned, you can apply following fix https://patchew.org/QEMU/2022110857.3116853-1-imamm...@redhat.com/ > > Regards, > Daniel
Re: Guests wont start with 15 pcie-root-port devices
On Fri, Nov 12, 2021 at 12:35:07PM -0500, Brian Rak wrote: > In 6.1, a guest with 15 empty pcie-root-port devices will not boot properly > - it just hangs on "Guest has not initialized the display (yet).". As soon > as I remove the last pcie-root-port, the guest begins starting up normally. Yes, QEMU 6.1 has a regression https://gitlab.com/qemu-project/qemu/-/issues/641 > commit e2a6290aab578b2170c1f5909fa556385dc0d820 > Author: Marcel Apfelbaum > Date: Mon Aug 2 12:00:57 2021 +0300 > > hw/pcie-root-port: Fix hotplug for PCI devices requiring IO > > Although I can't say I really understand why that commit triggered it. It caused the firmware to always allocate I/O space for every port and there's limited total I/O space, so it runs out at 15 devices. Regards, Daniel -- |: https://berrange.com -o-https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o-https://fstop138.berrange.com :| |: https://entangle-photo.org-o-https://www.instagram.com/dberrange :|
