Re: [PATCH 07/10] iommu/ipmmu-vmsa: Add Renesas R8A779F0 (R-Car S4) support

[Oleksandr <olekstysh@xxxxxxxxx>]

On 14.12.21 14:10, Yoshihiro Shimoda wrote:
> Hello Oleksandr-san,
Hello Shimoda-san,


> Thank you for the patch!
>
> > From: Oleksandr Tyshchenko, Sent: Sunday, November 28, 2021 2:52 AM
> >
> > From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
> >
> > Based on the following commit from the Renesas BSP:
> > 7003b9f732cffdc778fceb4bffb05ebb4540f726
> > located at:
> > https://github.com/renesas-rcar/linux-bsp/tree/v5.10.41/rcar-5.1.3.rc5
> I would like to reuse an upstream-based patch instead of this BSP patch.
Makes sense


> Linux upstream doesn't support the IPMMU-VMSA driver for R-Car S4 yet,
> but I believe the following patch can be helpful for R-Car S4:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/iommu/ipmmu-vmsa.c?h=v5.16-rc1&id=7a62ced8ebd0e1b692c9dc4781a8d4ddb0f74792
> I have a plan to modify the Linux IPMMU-VMSA driver for R-Car S4 in the future.
> - The ipmmu_features_r8a779a0 is replaced with ipmmu_features_rcar_gen4.
Thank you for the pointer, I got it, will do.

> I'll review further patches (8/10 through 10/10) tomorrow or later.
Thank you!


> Best regards,
> Yoshihiro Shimoda
--
Regards,

Oleksandr Tyshchenko