On Mon, Jul 10, 2023 at 03:01:33PM -0300, Jason Gunthorpe wrote: > On Mon, Jul 10, 2023 at 04:28:43PM +0200, Christian Hesse wrote: > > This device suffer an irq storm, so add it in tpm_tis_dmi_table to > > force polling. > > I can't help but feel like we are doing something wrong in the Linux > driver that we keep having IRQ problems. > > Surely Windows uses the IRQ on these devices? How does it work > reliably there? > > Jason I worry about it as well, especially as more vendors get added to the list. On the other hand it seems like every 6-12 months I am interacting with vendors that repeatedly forget to have reserved memory regions added to IVRS and DMAR tables for devices that need them. So I guess it is possible for the problem to be on their end as well. For at least one case that someone looked at back in May, it looked like he could see the issue looking at a schematic for the system. Regards, Jerry
