From: Ian Campbell <ijc@hellion.org.uk>
To: Konrad Rzeszutek Wilk <konrad@darnok.org>
Cc: Maxim Uvarov <maxim.uvarov@oracle.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org,
konrad.wilk@oracle.com
Subject: Re: [PATCH] XEN_DOMAIN_MEMORY options.
Date: Sat, 15 Oct 2011 17:42:48 +0100 [thread overview]
Message-ID: <1318696968.11016.47.camel@dagon.hellion.org.uk> (raw)
In-Reply-To: <20111015130552.GC18864@andromeda.dapyr.net>
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On Sat, 2011-10-15 at 09:05 -0400, Konrad Rzeszutek Wilk wrote:
> > On 10/14/2011 04:41 PM, Jeremy Fitzhardinge wrote:
> > >While it would be very silly to put 128GB of actual RAM on a 32-bit
> > >machine, systems can have non-contiguous RAM placed at high addresses,
> > >which would no longer be accessible.
>
> Do you have some ideas of which machines that might be?
Even if you were on such a machine, the discontiguity
(discontiguousness?) wouldn't ever be reflected in the pseudo-physical
memory map, would it? So since this variable controls the maximum size
of the p2m (rather than the m2p) it doesn't need to be larger than the
maximum sane 32 bit guest size (<64G).
Ian.
--
Ian Campbell
Every improvement in communication makes the bore more terrible.
-- Frank Moore Colby
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next prev parent reply other threads:[~2011-10-15 16:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-14 22:36 Maxim Uvarov
2011-10-14 22:36 ` [PATCH 1/2] xen: Fix XEN_MAX_DOMAIN_MEMORY to be selectable Maxim Uvarov
2011-10-14 22:36 ` [PATCH 2/2] xen: Make XEN_MAX_DOMAIN_MEMORY have more sensible defaults for 32-bit builds Maxim Uvarov
2011-10-14 23:00 ` [PATCH] XEN_DOMAIN_MEMORY options Jeremy Fitzhardinge
2011-10-14 23:33 ` Maxim Uvarov
2011-10-14 23:41 ` Jeremy Fitzhardinge
2011-10-15 0:43 ` Maxim Uvarov
2011-10-15 13:05 ` Konrad Rzeszutek Wilk
2011-10-15 16:42 ` Ian Campbell [this message]
2011-10-19 14:05 ` [Xen-devel] " Konrad Rzeszutek Wilk
2011-10-19 14:04 ` Konrad Rzeszutek Wilk
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