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    DateTue, 16 Oct 2007 18:33:42 -0400
    FromTheodore Tso <>
    SubjectRe: PCIe Hotplug: NFG unless I boot with card already inserted.
    On Tue, Oct 16, 2007 at 02:01:16PM -0700, Kristen Carlson Accardi wrote:
    > > 
    > > I believe the code is leaning too heavily on the BIOS for stuff,
    > > and like lots of other parts of the kernel we'll need an alternate
    > > strategy for when things aren't "perfect".
    > 
    > the pitfall for forcing pciehp when the BIOS hasn't provided OSC is that
    > you don't know for sure that you really have gained control of hot plug
    > operation properly.  You can obviously try it, using the provide forcing
    > option as you have done, but the behavior is not predictable.
    
    The bigger concern is whether this likely to break things on systems
    that *do* correctly implement ACPI support for PCIe hotplug?
    
         	  	    	      	   	       - Ted
    
    
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