On Wed, Mar 19, 2025 at 09:26:29AM +0000, Shameerali Kolothum Thodi wrote: > Having said that, current code only allows pxb-pcie root complexes avoiding > the pcie.0. The idea behind this was, user can use pcie.0 with a non accel > SMMUv3 > for any emulated devices avoiding the performance bottlenecks we are > discussing for emulated dev+smmuv3-accel cases. But based on the feedback from > Eric and Daniel I will relax that restriction and will allow association with > pcie.0.
Just want a clarification here.. If VM has a passthrough device only: attach it to PCIE.0 <=> vSMMU0 (accel=on) If VM has an emulated device and a passthrough device: attach the emulated device to PCIE.0 <=> vSMMU bypass (or accel=off?) attach the passthrough device to pxb-pcie <=> vSMMU0 (accel=on) ? Thanks Nicolin
