linux-kernel - Re: [PATCH v5 1/3] dma-mapping: benchmark: modify the framework to adapt to more map modes

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Message-ID: <CAGsJ_4w5E6L9SGp4oujK=D9sJwa5bYeQY1fUhxVAn6v=+OP-pg@mail.gmail.com>
Date: Tue, 23 Dec 2025 11:12:36 +0800
From: Barry Song <21cnbao@...il.com>
To: Qinxin Xia <xiaqinxin@...wei.com>
Cc: jonathan.cameron@...wei.com, wangzhou1@...ilicon.com, 
	iommu@...ts.linux.dev, prime.zeng@...wei.com, fanghao11@...wei.com, 
	linux-kernel@...r.kernel.org, linuxarm@...wei.com
Subject: Re: [PATCH v5 1/3] dma-mapping: benchmark: modify the framework to
 adapt to more map modes

> To be compatible with other modes that in the future, 'prepare_data' may
> not be necessary. So, I add a judgment here.We can delete it in the
> current version and add it after this scenario occurs.

Right, feel free to drop it. I guess __GFP_ZERO for allocation is sufficient.