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[Xen-devel] Re: [PATCH] Use hypercalls instead of accessing debug regist

from [Arun Sharma]

[Permanent Link][Original]

To:	Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject:	[Xen-devel] Re: [PATCH] Use hypercalls instead of accessing debug registers directly.
From:	Arun Sharma <arun.sharma@xxxxxxxxx>
Date:	Thu, 07 Jul 2005 16:38:27 -0700
Cc:	Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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Ian Pratt wrote:

Use hypercalls instead of accessing debug registers directly.


Is this based on measurement? If the debug registers aren't on the
critical path its probably not worth the change. If they are, they
should probably be part of a multicall.

It's not on the critical path. We probably should just emulate theinstruction on the GP fault.

        -Arun

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