Re: [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom PTE attributes

To: guoren@xxxxxxxxxx
Subject: Re: [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom PTE attributes
From: Christoph Hellwig <hch@xxxxxx>
Date: Sun, 6 Jun 2021 16:39:41 +0200
Cc: anup.patel@xxxxxxx, palmerdabbelt@xxxxxxxxxx, arnd@xxxxxxxx, wens@xxxxxxxx, maxime@xxxxxxxxxx, drew@xxxxxxxxxxxxxxx, liush@xxxxxxxxxxxxxxxxx, lazyparser@xxxxxxxxx, wefu@xxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-sunxi@xxxxxxxxxxxxxxx, Guo Ren <guoren@xxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>
In-reply-to: <1622970249-50770-10-git-send-email-guoren@kernel.org>
References: <1622970249-50770-1-git-send-email-guoren@kernel.org> <1622970249-50770-10-git-send-email-guoren@kernel.org>
User-agent: Mutt/1.5.17 (2007-11-01)

NAK, no SOC must ever mess with pagetable attributes.

Follow-Ups:
- Re: [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom PTE attributes
  - From: Guo Ren

References:
- [RFC PATCH v2 00/11] riscv: Add DMA_COHERENT support for Allwinner D1
  - From: guoren
- [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom PTE attributes
  - From: guoren