linux-kernel - Re: [PATCH] grant-table: don't set m2p override if kmap

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Message-ID: <5278E64C.40200@citrix.com>
Date:	Tue, 5 Nov 2013 12:36:28 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Roger Pau Monne <roger.pau@...rix.com>
CC:	<xen-devel@...ts.xen.org>, <linux-kernel@...r.kernel.org>,
	Matt Wilson <msw@...zon.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [PATCH] grant-table: don't set m2p override if kmap_ops is not
 set

On 05/11/13 11:24, Roger Pau Monne wrote:
> IMHO there's no reason to set a m2p override if the mapping is done in
> kernel space, so only set the m2p override when kmap_ops is set.

Can you provide a more detailed reasoning about why this is safe?

Did you consider other ways of improving scalability?  e.g., a
per-bucket read-write lock.

David
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