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From: Guo Ren <guoren@kernel.org>
Date: Sun, 6 Jun 2021 23:08:35 +0800
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Subject: Re: [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom
 PTE attributes
To: Christoph Hellwig <hch@lst.de>
Cc: Anup Patel <anup.patel@wdc.com>, Palmer Dabbelt <palmerdabbelt@google.com>, 
	Arnd Bergmann <arnd@arndb.de>, wens@csie.org, maxime@cerno.tech, 
	Drew Fustini <drew@beagleboard.org>, liush@allwinnertech.com, 
	=?UTF-8?B?V2VpIFd1ICjlkLTkvJ8p?= <lazyparser@gmail.com>, wefu@redhat.com, 
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Content-Type: text/plain; charset="UTF-8"

On Sun, Jun 6, 2021 at 10:39 PM Christoph Hellwig <hch@lst.de> wrote:
>
> NAK, no SOC must ever mess with pagetable attributes.

I don't think it messes with page table attributes. _PAGE_BASE
contains variable won't cause any problem.

-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/