[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH PV_OPS PCIFRONT]
On Fri, Nov 06, 2009 at 01:40:14PM -0800, Jeremy Fitzhardinge wrote: > On 11/05/09 14:04, Konrad Rzeszutek Wilk wrote: > >> That is it for right now. The driver works with INTx and MSI cards. I've > >> tested > >> with USB and network (Broadcom) succesfully. There is still some more work > >> to do: > >> - MSI disable is not yet in, > >> - no MSI-X enable/disable functionality. > >> > > and: > > - If 4GB or more are allocated to the domain, you get this: > > > > PCI: Warning: Cannot find a gap in the 32bit address range > > PCI: Unassigned devices with 32bit resource registers may break! > > > > and the device shows up as disabled and is not usuable. > > > > Presumably less than 4G can trigger this. My rough thought about this > was to always reserve a chunk of memory under 4G to make space for this > kind of thing, and push the displaced memory higher. <nods> This would be done in the xc_build_domain_linux_something ? > > > > WARNING: at drivers/pci/msi.c:602 pci_enable_msi_block+0xcd/0x339() > > .. snip .. > > Call Trace: > > [<ffffffff8107ed59>] warn_slowpath_common+0xc9/0x10c > > [<ffffffff8107edcc>] warn_slowpath_null+0x30/0x4d > > [<ffffffff81362cec>] pci_enable_msi_block+0xcd/0x339 > > [<ffffffff814006ec>] ? pciback_do_op+0x0/0x1b4 > > [<ffffffff8140469e>] pciback_enable_msi+0x3e/0xb0 > > [<ffffffff814007b9>] pciback_do_op+0xcd/0x1b4 > > ..snip.. > > > > What does that warning mean? Something about slowpath. Didn't dive any deeper in this. I think it complains about the workqueue taking too long to do its job. > > > But besides that it works :-) > > > > Good! I'll throw it into the mix and see how it flies. <crosses his fingers> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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