linux-kernel - Re: [PATCH v12 10/18] xen/pvh: Update E820 to work with PVH (v2)

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Message-ID: <52C59068.1040603@citrix.com>
Date:	Thu, 2 Jan 2014 16:14:32 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	<linux-kernel@...r.kernel.org>, <xen-devel@...ts.xenproject.org>,
	<boris.ostrovsky@...cle.com>, <stefano.stabellini@...citrix.com>,
	<mukesh.rathor@...cle.com>
Subject: Re: [PATCH v12 10/18] xen/pvh: Update E820 to work with PVH (v2)

On 01/01/14 04:35, Konrad Rzeszutek Wilk wrote:
> From: Mukesh Rathor <mukesh.rathor@...cle.com>
> 
> In xen_add_extra_mem() we can skip updating P2M as it's managed
> by Xen. PVH maps the entire IO space, but only RAM pages need
> to be repopulated.

So this looks minimal but I can't work out what PVH actually needs to do
here.  This code really doesn't need to be made any more confusing.

I don't understand why the guest hasn't been supplied with sensible
memory map that we can use as-is without playing all these games?

David
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