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From: Julien Grall <julien.grall@linaro.org>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: xen-devel@lists.xenproject.org, tim@xen.org,
	Jan Beulich <jbeulich@suse.com>,
	stefano.stabellini@citrix.com
Subject: Re: [PATCH v8 4/4] xen/arm: grant: Add another entry to map MFN 1:1 in dom0 p2m
Date: Wed, 21 May 2014 14:54:05 +0100	[thread overview]
Message-ID: <537CAFFD.4020001@linaro.org> (raw)
In-Reply-To: <1400680299.4856.101.camel@kazak.uk.xensource.com>

On 05/21/2014 02:51 PM, Ian Campbell wrote:
> On Wed, 2014-05-21 at 14:42 +0100, Julien Grall wrote:
> 
>>> Is gnttab the only possible user?
>>
>> For ARM yes.
> [...]
>> The iommu_map_page could be reuse more generically in long-term. Using
>> p2m_grant_map_{ro,rw} would be confusing here.
> 
> BTW, those statements contradict each other.

Right. This function could also be used if we want to support per-IOMMU
p2m rather than sharing with the CPU.

-- 
Julien Grall

  reply	other threads:[~2014-05-21 13:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-19 16:23 [PATCH v8 0/4] IOMMU support for ARM Julien Grall
2014-05-19 16:23 ` [PATCH v8 1/4] xen/arm: p2m: Clean cache PT when the IOMMU doesn't support coherent walk Julien Grall
2014-05-19 16:23 ` [PATCH v8 2/4] xen: iommu: Define PAGE_{SHIFT, SIZE, ALIGN, MASK)_64K Julien Grall
2014-05-19 16:23 ` [PATCH v8 3/4] drivers/passthrough: arm: Add support for SMMU drivers Julien Grall
2014-05-19 16:24 ` [PATCH v8 4/4] xen/arm: grant: Add another entry to map MFN 1:1 in dom0 p2m Julien Grall
2014-05-20  7:46   ` Jan Beulich
2014-05-20  9:21     ` Ian Campbell
2014-05-20 10:48     ` Julien Grall
2014-05-21 13:27   ` Ian Campbell
2014-05-21 13:42     ` Julien Grall
2014-05-21 13:50       ` Ian Campbell
2014-05-21 14:01         ` Julien Grall
2014-05-21 14:40           ` Ian Campbell
2014-05-21 13:51       ` Ian Campbell
2014-05-21 13:54         ` Julien Grall [this message]
2014-05-21 14:04           ` Ian Campbell
2014-05-21 13:27 ` [PATCH v8 0/4] IOMMU support for ARM Ian Campbell

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