On Tue, 2019-03-12 at 10:14 -0700, James Bottomley wrote: > > > However, I am saying we should root cause this problem rather than > > > take a blind shot at the apparent timeout complexity. My timeout > > > instability is definitely related to the polling adjustments, so > > > it's not unreasonable to think Facebooks might be as well. > > > > James, I thought Peter sent you a tis "debug" tool to help you debug > > the problem you're seeing. Whatever happened? https://patchwork.kernel.org/patch/10520247/#22107607 > > No, not seen one. I have tried to debug the problem, but it's really > odd: my TPM is a polled nuvoton (so no irq line). If you poll the data > ready bit on my TPM too often, it simply drops off the bus and every > TPM operation after that times out. The only way to recover is to > reboot. > > James >
