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From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: carsteno-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Subject: Re: swapping with MMU Notifiers V2
Date: Wed, 30 Jan 2008 17:09:54 +0200	[thread overview]
Message-ID: <47A09342.1040708@qumranet.com> (raw)
In-Reply-To: <47A09142.4090307-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>

Carsten Otte wrote:
> We have similar restrictions than you're naming here. Our guest may 
> start at a (userspace-) page boundary, and has a fixed 1:1 mapping to 
> userspace for a given length. We do that by just having one memory 
> slot which has to start at virtual address zero in kvm.

I thought you're using an offset to put the guest somewhere else?  
Putting the guest at offset zero means that a qemu null pointer deref 
causes a memory corruption instead of an abort.

> I have way to few knowledge about x86, but to me both the native page 
> table layout and the nested one look very similar. I believe AMD has 
> done a pretty good job designing that.

The page table formats are identical.

-- 
error compiling committee.c: too many arguments to function


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  parent reply	other threads:[~2008-01-30 15:09 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-29 14:50 swapping with MMU Notifiers V2 Andrea Arcangeli
     [not found] ` <20080129145021.GJ7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-29 15:13   ` Izik Eidus
2008-01-29 16:14   ` Carsten Otte
     [not found]     ` <479F50D6.4020005-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-29 16:24       ` Avi Kivity
     [not found]         ` <479F532C.1020503-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-29 16:31           ` Carsten Otte
2008-01-29 16:35           ` Carsten Otte
     [not found]             ` <479F55D6.1090807-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-29 17:02               ` Avi Kivity
     [not found]                 ` <479F5C3C.7070501-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-29 18:13                   ` Joerg Roedel
2008-01-29 17:54               ` Andrea Arcangeli
     [not found]                 ` <20080129175420.GR7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-29 18:05                   ` Avi Kivity
     [not found]                     ` <479F6AE0.3080702-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-29 18:34                       ` Andrea Arcangeli
2008-01-30 11:26                   ` Carsten Otte
     [not found]                     ` <47A05EEF.3010701-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-30 11:42                       ` Andrea Arcangeli
     [not found]                         ` <20080130114206.GG7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-30 15:01                           ` Carsten Otte
     [not found]                             ` <47A09142.4090307-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-30 15:09                               ` Avi Kivity [this message]
     [not found]                                 ` <47A09342.1040708-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-30 15:14                                   ` Carsten Otte
2008-01-29 18:19               ` Joerg Roedel
     [not found]                 ` <20080129181918.GA6344-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2008-01-29 18:42                   ` Andrea Arcangeli
2008-01-30  9:49                   ` Carsten Otte
     [not found]                     ` <47A04816.4090408-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-30 14:38                       ` Joerg Roedel
2008-01-29 16:52           ` Andrea Arcangeli
     [not found]             ` <20080129165219.GN7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-29 17:17               ` Carsten Otte
     [not found]                 ` <479F5FBF.40203-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-29 17:39                   ` Andrea Arcangeli
2008-01-29 16:49       ` Andrea Arcangeli
     [not found]         ` <20080129164954.GM7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-29 17:04           ` Avi Kivity
     [not found]             ` <479F5CBB.5060702-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-29 17:49               ` Andrea Arcangeli
     [not found]                 ` <20080129174955.GQ7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-29 17:53                   ` Avi Kivity
2008-01-29 17:17           ` Carsten Otte
2008-01-30 18:57   ` Andrea Arcangeli
     [not found]     ` <20080130185735.GS7233-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-31  6:50       ` Avi Kivity
     [not found]         ` <47A16F99.8060502-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-31 10:15           ` Andrea Arcangeli
     [not found]             ` <20080131101519.GG7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-31 10:34               ` Avi Kivity
     [not found]                 ` <47A1A43D.6020203-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-31 12:58                   ` Andrea Arcangeli
     [not found]                     ` <20080131125842.GL7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-31 18:56                       ` Andrea Arcangeli
2008-02-11  8:20                         ` Avi Kivity
2008-02-11 11:37                           ` Andrea Arcangeli

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