On Thu, Oct 10, 2024 at 04:54:19PM +0300, Dmitry Baryshkov wrote: > On Wed, Oct 09, 2024 at 06:17:15PM GMT, Johan Hovold wrote: > > The DWC PCIe controller can be used with its internal MSI controller or > > with an external one such as the GICv3 Interrupt Translation Service > > (ITS). > > > > Add the msi-map properties needed to use the GIC ITS. This will also > > make Linux switch to the ITS implementation, which allows for assigning > > affinity to individual MSIs. This specifically allows NVMe and Wi-Fi > > interrupts to be processed on all cores (and not just on CPU0). > > > > Note that using the GIC ITS on x1e80100 will cause Advanced Error > > Reporting (AER) interrupts to be received on errors unlike when using > > the internal MSI controller. Consequently, notifications about > > (correctable) errors may now be logged for errors that previously went > > unnoticed. > > > > Also note that PCIe5 (and PCIe3) can currently only be used with the > > internal MSI controller due to a platform (firmware) limitation. > > > > Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx> > > --- > > > > The PCIe Gen4 stability fixes [1] are now in 6.12-rc1 so that we can enable > > the GIC ITS without being flooded with link error notifications [2]. > > Cc: <stable+noautosel@xxxxxxxxxx> # Depends on driver stability fixes This patch is enabling a new feature, it is not a fix, so Bjorn please do not include the above tag when applying. > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> But thanks for reviewing. Johan
