From: Christoph Egger <Christoph.Egger@amd.com>
To: Tim Deegan <tim@xen.org>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: [PATCH] nestedsvm: fix paging mode
Date: Mon, 1 Oct 2012 15:50:30 +0200 [thread overview]
Message-ID: <50699FA6.6070805@amd.com> (raw)
In-Reply-To: <20120927145356.GG8831@ocelot.phlegethon.org>
On 09/27/12 16:53, Tim Deegan wrote:
> At 16:01 +0200 on 21 Sep (1348243291), Christoph Egger wrote:
>>
>> On VMRUN and VMEXIT emulation update the paging mode
>> for Shadow-on-Nested. This allows Xen to walk the
>> l1 hypervisors shadow page table correctly.
>> Problem found with 64bit Win7 and 32bit XPMode where
>> Win7 switches forth and back between long mode and
>> PAE legacy pagetables.
>>
>> Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
>
> Don't you have to do this in other cases as well? I think that
> shadow-on-shadow might need it, at least.
It is needed for all cases where the l1 guest does shadow paging.
This includes: Shadow-on-Nested and Shadow-on-Shadow.
Christoph
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85689 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2012-10-01 13:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 14:01 [PATCH] nestedsvm: fix paging mode Christoph Egger
2012-09-27 14:53 ` Tim Deegan
2012-10-01 13:50 ` Christoph Egger [this message]
2012-10-04 10:37 ` Tim Deegan
2012-10-04 12:14 ` Christoph Egger
2012-10-04 13:23 ` Tim Deegan
2012-10-05 9:07 ` Christoph Egger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50699FA6.6070805@amd.com \
--to=christoph.egger@amd.com \
--cc=tim@xen.org \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.