From mboxrd@z Thu Jan  1 00:00:00 1970
From: chenfeng <puck.chen@hisilicon.com>
Subject: How to ensure that different peripherals getting different IOVA
 address in kernel?
Date: Wed, 23 Sep 2015 09:55:58 +0800
Message-ID: <560206AE.4020608@hisilicon.com>
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Cc: Dan zhao <dan.zhao@hisilicon.com>, qijiwen <qijiwen@hisilicon.com>, Peter Panshilin <peter.panshilin@hisilicon.com>, Suzhuangluan <suzhuangluan@hisilicon.com>, Yiping Xu <xuyiping@hisilicon.com>, "Wangfei (William, Euler)" <w.f@huawei.com>
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Hi all,

In IOMMU architecture , how to make two different peripherals share the=
 same page table ?

In other words , is there a mechanism or structure to make two peripher=
als get completely different address.

eg:

peri-A=E3=80=81peri-B and peri-C share the same iova address 0-1G for s=
ome performance requests.

So the A,B,C need to use the same IOVA generator to ensure this,but I d=
on't find an architecture to make this.

Any help will be appreciated.

Puck