On Thu, Nov 21, 2013 at 1:34 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>
> Here are suggestion is:
> assume mmio pref: will be use for 64bit pref only, and if the mmio pref
> does not support 64bit, we just ignore it.
> If devices under that bridge need pref, we will just use range from bridge's
> nonpref mmio.
Since we always scan devices behind the bus, why don't we take that
into account? If we find devices with 32-bit mmio, we try to make the
prefetchable one be in the 32-bit range.
> In my test setups, it is always working.
> --- only with Intel network devices and Mellanox Infiniband cards and storage
> cards from Qlogic and Emulex.
Right. And remember how many times your testing did *not* show
problems that others saw?
"Works for me" doesn't work for PCI resource management.
Linus
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