Messages in this thread | | | Subject | Re: [PATCH RFC 00/77] Re-design MSI/MSI-X interrupts enablement pattern | From | Benjamin Herrenschmidt <> | Date | Sun, 06 Oct 2013 08:46:26 +1100 |
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On Sat, 2013-10-05 at 16:20 +0200, Alexander Gordeev wrote: > So my point is - drivers should first obtain a number of MSIs they *can* > get, then *derive* a number of MSIs the device is fine with and only then > request that number. Not terribly different from memory or any other type > of resource allocation ;)
What if the limit is for a group of devices ? Your interface is racy in that case, another driver could have eaten into the limit in between the calls.
Ben.
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