I still see this error in the latest QEMU. I find that this patch is not merged in. Anybody knows why?
Thanks, Feng > -----Original Message----- > From: qemu-devel-bounces+feng.wu=intel....@nongnu.org > [mailto:qemu-devel-bounces+feng.wu=intel....@nongnu.org] On Behalf Of > Igor Mammedov > Sent: Friday, May 23, 2014 8:04 PM > To: qemu-devel@nongnu.org > Cc: anthony.per...@citrix.com; Chen, Tiejun; stefano.stabell...@eu.citrix.com; > aligu...@amazon.com; m...@redhat.com > Subject: [Qemu-devel] [PATCH] pc: piix4_pm: init legacy PCI hotplug when > running on Xen > > if user starts QEMU with "-machine pc,accel=xen", then > compat property in xenfv won't work and it would > cause error: > "Unsupported bus. Bus doesn't have property 'acpi-pcihp-bsel' set" > when PCI device is added with -device on QEMU CLI. > > In case of Xen instead of using compat property, > just use the fact that xen doesn't use QEMU's > fw_cfg/acpi tables to switch piix4_pm into legacy > PCI hotplug mode when Xen is enabled. > > Signed-off-by: Igor Mammedov <imamm...@redhat.com> > --- > hw/acpi/piix4.c | 3 +++ > hw/i386/pc_piix.c | 11 ----------- > 2 files changed, 3 insertions(+), 11 deletions(-) > > diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c > index 227ea30..12542c3 100644 > --- a/hw/acpi/piix4.c > +++ b/hw/acpi/piix4.c > @@ -501,6 +501,9 @@ I2CBus *piix4_pm_init(PCIBus *bus, int devfn, > uint32_t smb_io_base, > s->irq = sci_irq; > s->smi_irq = smi_irq; > s->kvm_enabled = kvm_enabled; > + if (!fw_cfg) { > + s->use_acpi_pci_hotplug = false; > + } > > qdev_init_nofail(dev); > > diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c > index a13e8d6..067ff0c 100644 > --- a/hw/i386/pc_piix.c > +++ b/hw/i386/pc_piix.c > @@ -840,17 +840,6 @@ static QEMUMachine xenfv_machine = { > .max_cpus = HVM_MAX_VCPUS, > .default_machine_opts = "accel=xen", > .hot_add_cpu = pc_hot_add_cpu, > - .compat_props = (GlobalProperty[]) { > - /* xenfv has no fwcfg and so does not load acpi from QEMU. > - * as such new acpi features don't work. > - */ > - { > - .driver = "PIIX4_PM", > - .property = "acpi-pci-hotplug-with-bridge-support", > - .value = "off", > - }, > - { /* end of list */ } > - }, > }; > #endif > > -- > 1.9.0 >
