Hello Oleksandr-san, > From: Oleksandr Tyshchenko, Sent: Sunday, November 28, 2021 2:52 AM > > From: Oleksandr Tyshchenko <[email protected]> > > This is a non-verbatim port of corresponding Linux upsteam commit: > 16d9454f5e0447f9c19cbf350b35ed377b9f64eb > > Original commit message: > commit 16d9454f5e0447f9c19cbf350b35ed377b9f64eb > Author: Yoshihiro Shimoda <[email protected]> > Date: Wed Nov 6 11:35:47 2019 +0900 > > iommu/ipmmu-vmsa: Add helper functions for MMU "context" registers > > Since we will have changed memory mapping of the IPMMU in the future, > This patch adds helper functions ipmmu_ctx_{reg,read,write}() > for MMU "context" registers. No behavior change. > > Signed-off-by: Yoshihiro Shimoda <[email protected]> > Reviewed-by: Geert Uytterhoeven <[email protected]> > Reviewed-by: Niklas Söderlund <[email protected]> > Signed-off-by: Joerg Roedel <[email protected]> > > ********** > > This is a prereq work needed to add support for S4 series easily > in the future. > > Besides changes done in the original commit, we also need to update > an extra call sites which Linux driver doesn't have, but Xen driver > has such as ipmmu_ctx_write_cache(), etc. > > No change in behavior. > > Signed-off-by: Oleksandr Tyshchenko <[email protected]>
Thank you for the patch! Reviewed-by: Yoshihiro Shimoda <[email protected]> Best regards, Yoshihiro Shimoda
