On 7/10/19 6:13 PM, Jan Kiszka wrote: >> Ok, there's one chance left: According to lspci, the device actually >> supports MSI. It's just not being used by Linux. Maybe I can somehow >> convince Linux to switch to MSI. > Latest kernel already? >
I'm using the 4.19-rt jailhouse. Do you know of any relevant changes upstream? Anyway, it's worth a try, let me test upstream... At least for 4.19, it looks like I'm not able to easily switch to MSI. At the moment, I don't even understand why the kernel actually uses legacy interrupts, while MSI cap is present. Something is odd there, I'd expect that MSI is, if available, the perefered method. But even the root-cell after boot won't enable MSI. Still investigating... I hope that I can switch to MSI with maybe a dirty hack, but I need more time to dig through the kernel's PCI stack (PCI starts bugging me). You can find things there you never wanted to know! :-) Ralf -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/f7f0f3d4-33e7-bc74-7bb9-79cdb8c52c0d%40oth-regensburg.de. For more options, visit https://groups.google.com/d/optout.
