On Thu, Jul 23, 2015 at 10:32 PM, Ben Skeggs <skeggsb at gmail.com> wrote: > On 24 July 2015 at 01:20, Hans de Goede <hdegoede at redhat.com> wrote: >> MSI interrupts appear to not work for nv46 based cards. Change the mc >> subdev oclass for these cards from nv44 to nv4c, the nv4c mc code is >> identical to the nv44 mc code except that it does not use msi >> (it does not define a msi_rearm callback). > I'm fine with this, but it'd be nice to check that the binary driver > doesn't/can't use MSI on these too (there might be an alternate method > we need to use). > > Would you be able to grab the latest proprietary driver that works on > nv4x, and do a mmiotrace of it? You *might* need to use "modprobe > nvidia NVreg_EnableMSI=1", because at some point NVIDIA didn't use it > by default anywhere.
AFAIK the blob never used MSI on nv4x. Perhaps we should have just left it alone...
