On Mon, Oct 12, 2026 at 12:17:38PM +0530, Naman Jain wrote: > > The disable_irq_nosync still does non-posted transactions for msi and > > msi-x. NVMe has a shortcut for msi, but there's currently nothing for > > msi-x. For that case, I have a prep patch I consulted with Thomas, and > > the result is below. I'm delayed sending it out while catching up from > > travel, but I think this will be even more efficient. > > > > Thanks for sharing. I'll give it a try. IIUC, after your patch goes in, I > should be using disable_irq_nowait() in above and see better performance.
Yes, exactly. It should save hundreds of CPU cycles on every switch from irq to polling. > Please correct me if I am wrong. I'll monitor your patch in LKML for future > versions. I need a user for the new API. NVMe is the only one I have in mind right now, so this new irq disable would have to be tied to the series that does the adaptive polling.
