Re: [BUG] dma-mapping: remove CONFIG_DMA_REMAP

From: Mark Hounschell
Date: Tue Jun 21 2022 - 10:16:50 EST


On 6/21/22 09:48, Christoph Hellwig wrote:
On Tue, Jun 21, 2022 at 09:43:18AM -0400, Mark Hounschell wrote:
Revert that commit and all works like normal. This commit breaks user land.

No. We had that discussion before. It exposeѕ how broken your out of
tree driver is, which you don't bother to fix despite Robin even taking
the pains to explain you how.

No, this is not the original issue and we never actually had a discussion. That original issue was about using Set/ClearPageReserved. You nor Robin even tried to explain why it was wrong to use it. It was never an issue in previous kernels. Why now? In any case I have removed that code. This is what happens now.

What is it you think I am doing wrong. Except for using Set/ClearPageReserved you have not explained anything to me.

Mark