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Re: [Xen-devel] virtual frame_table?


  • To: Alex Williamson <alex.williamson@xxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Thu, 27 Aug 2009 07:30:48 +0100
  • Cc:
  • Delivery-date: Wed, 26 Aug 2009 23:31:16 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcomkxxaT90lCxcQTpmf4+FYoPs1HgATM238
  • Thread-topic: [Xen-devel] virtual frame_table?

On 26/08/2009 22:20, "Alex Williamson" <alex.williamson@xxxxxx> wrote:

> On ia64 we had a virtual frame_table to allow for better handling of
> sparse memory configs.  Has x86 considered anything similar?  I see that
> init_frametable() is currently allocating 32bytes per page for
> everything up to max_page.  This can consume a pretty significant chunk
> of memory if nodes are discontiguous.  Anyone motivated to fix it?

Easily fixed if there's a reason to. Not really many x86 systems have
discontiguous memory.

 K.



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