From: chenfeng <puck.chen@hisilicon.com>
To: joro@8bytes.org, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, rcallicotte@gmail.com,
robin.murphy@arm.com, jiang.liu@linux.intel.com
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>
Subject: How to ensure that different peripherals getting different IOVA address in kernel?
Date: Wed, 23 Sep 2015 09:55:58 +0800 [thread overview]
Message-ID: <560206AE.4020608@hisilicon.com> (raw)
In-Reply-To: <5600AF72.2000106@hisilicon.com>
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 peripherals get completely different address.
eg:
peri-A、peri-B and peri-C share the same iova address 0-1G for some performance requests.
So the A,B,C need to use the same IOVA generator to ensure this,but I don't find an architecture to make this.
Any help will be appreciated.
Puck
next parent reply other threads:[~2015-09-23 1:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5600AF72.2000106@hisilicon.com>
2015-09-23 1:55 ` chenfeng [this message]
[not found] ` <560206AE.4020608-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org>
2015-09-23 2:42 ` How to ensure that different peripherals getting different IOVA address in kernel? Jiang Liu
2015-09-23 12:08 ` Robin Murphy
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