Messages in this thread | | | Date | Wed, 02 Jun 2010 17:47:23 +0200 | From | "H. Peter Anvin" <> | Subject | Re: [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned |
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On 06/02/2010 05:45 PM, Bjorn Helgaas wrote: > On Wednesday, June 02, 2010 01:31:18 am H. Peter Anvin wrote: >> On 06/01/2010 03:49 PM, Bjorn Helgaas wrote: >>>> >>>> BIOS still assigns the MMIO BAR's so the devices are alive. >>> >>> I'm sorry; I don't follow this. BIOS assigns MMIO BARs regardless >>> of whether we have your patch. >> >> I'm assuming that that Mike is implying is that the allocation code runs >> out of I/O space and as a result shuts down the entire device. > > Yeah, that's why I asked about a deeper problem. There's not really a > "shut down this device" flag, so the only way I can think of that we > might make a device completely unusable is if we release all the device > resources and then fail to reassign them. > > A concrete example, e.g., a dmesg log, would go a long ways toward > clarifying this. >
That's what I thought, which I guess means my original question to Mike still stands...
-hpa
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