On 10/21/2011 11:19 AM, Jan Kiszka wrote: > Currently, MSI messages can only be injected to in-kernel irqchips by > defining a corresponding IRQ route for each message. This is not only > unhandy if the MSI messages are generated "on the fly" by user space, > IRQ routes are a limited resource that user space as to manage > carefully.
By itself, this does not provide enough value to offset the cost of a new ABI, especially as userspace will need to continue supporting the old method for a very long while. > By providing a direct injection with, we can both avoid using up limited > resources and simplify the necessary steps for user land. The API > already provides a channel (flags) to revoke an injected but not yet > delivered message which will become important for in-kernel MSI-X vector > masking support. > With the new feature it may be worthwhile, but I'd like to see the whole thing, with numbers attached. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
