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Re: [Xen-devel] [PATCH] xen: arm: Enable 1:1 workaround by default

On 27/11/13 12:23, Ian Campbell wrote:
> On Wed, 2013-11-27 at 12:20 +0000, Andrew Cooper wrote:
>> On 27/11/13 12:19, Ian Campbell wrote:
>>> I was just about to send out patches adding the 1:1 workaround to vexpress 
>>> (the
>>> foundation model is a vexpress platfrom with DMA) and sunxi.
>>> That would have meant that all platforms now implement the quirk. Instead 
>>> lets
>>> just make it the default and remove the quirk.
>>> In the future this will likely be set based on the presence absence of an
>>> IOMMU, perhaps with additional overrides by the platform.
>>> A command line option no-dom0_11_mapping is provided.
>>> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>> Can you patch docs/misc/xen-command-line.markdown as well please
> I left it out on purpose, given the implications of using it I actually
> want people to have to talk to us before using it.
> I'd be more inclined to remove the option that to document it.
> Ian.

Hmm ok - perhaps a comment beside boolean_param() indicating that this
is a temporary hack and is expected to disappear completely in due course?


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