Hi Arnd, On 11/19/2015 12:31 AM, Arnd Bergmann wrote:
On Wednesday 18 November 2015 17:37:16 Ray Jui wrote:
I haven't spent too much time investigating, and am hoping to eventually enable affinity support with an incremental patch in the future when I have more time to investigate.Is it possible that you have a set of MSIs per GIC interrupt (as Marc suggested earlier) and that the way it is intended to be used is by having each one of them target a different CPU? That way you can do affinity by switching to a different MSI in .set_affinity(), I think that is how the old style MSI all used to work when each CPU had its own MSI register. Arnd
Okay, I see that Xgene MSI has a very similar implementation to support MSI IRQ affinity. I plan to take a closer look and try it out in the future. But it likely won't be included in the current round of patch set.
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