From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH RFC v1 12/13] xen: allow 64bit HVM guests to
 use XENMEM_memory_map
Date: Tue, 23 Jun 2015 10:43:31 +0100
Message-ID: <5589466302000078000880A6@mail.emea.novell.com>
References: <1434989487-74940-1-git-send-email-roger.pau@citrix.com>
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To: Roger Pau Monne <roger.pau@citrix.com>
Cc: Elena Ufimtseva <elena.ufimtseva@oracle.com>, Wei Liu <wei.liu2@citrix.com>, Ian Campbell <ian.campbell@citrix.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, xen-devel@lists.xenproject.org, Boris Ostrovsky <boris.ostrovsky@oracle.com>
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>>> On 22.06.15 at 18:11, <roger.pau@citrix.com> wrote:
> Enable this hypercall for 64bit HVM guests in order to fetch the e820 memory
> map in the absence of an emulated BIOS. The memory map is populated and
> notified to Xen in arch_setup_meminit_hvm.

I see no reason why this should be limited to 64-bit guests.

Jan