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From: Mukesh Rathor <mukesh.rathor@oracle.com>
To: "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>,
	Ian Campbell <Ian.Campbell@citrix.com>,
	"stefano.stabellini@eu.citrix.com"
	<stefano.stabellini@eu.citrix.com>
Subject: [hybrid] : mmap pfn space...
Date: Fri, 23 Mar 2012 11:01:44 -0700	[thread overview]
Message-ID: <20120323110144.4b2f1d45@mantra.us.oracle.com> (raw)

Hi Ian/Stefano,

So, I'm back to using pfn space from maxphysaddr below. Stefano, you
suggested ballooning, but that would be just too slow. There are lot of
pages to be mapped, 4k at a time during guest creation, and I am afraid
ballooning and hypercalls to populate EPT will be pretty slow.

OTOH, there is tons of address space available between max-physaddr and
max pfn in dom0. Stefano, your concern was stuff mapped there 
causing problems in future. But we can always look at the e820 for
conflicts. Keeping things fast is important for us .

Please let me know if you still have issues with my approach. I
believe this is what Ian is doing on ARM port.

thanks,
Mukesh

             reply	other threads:[~2012-03-23 18:01 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-23 18:01 Mukesh Rathor [this message]
2012-03-26 10:37 ` [hybrid] : mmap pfn space Stefano Stabellini
2012-03-26 10:40   ` Ian Campbell
2012-04-14  1:47   ` Mukesh Rathor
2012-04-16 14:14     ` Ian Campbell
2012-04-16 16:22       ` Stefano Stabellini
2012-04-16 16:26         ` Ian Campbell
2012-04-18  1:20         ` Mukesh Rathor
2012-04-18  8:33           ` Ian Campbell
2012-04-16 14:39     ` Daniel De Graaf
2012-04-16 14:59       ` Ian Campbell

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