lkml.org 
[lkml]   [2010]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.6.33-rc2: Xen/Guest switching to user mode with no user page tables
On Sun, 10 Jan 2010 at 12:59, Ian Campbell wrote:
> The correct fix is for the Xen backend to declare kernel RPL == 0 for 64
> bit guests -- the hyervisor already takes care of all the necessary
> squashing to ring 3 transparently (because making the guest worry about
> it would break the very common assumption that you can distinguish user
> from kernel CS by RPL).

Yes' it's a 64bit guest, I should have mentioned this from the beginning.
With the 2 patches from Ian and Cyrill applied, the DomU is now booting
fine again (currently running mainline -git).

Cyrill: with your patch alone (for arch/x86/kernel/process.c), the DomU
is still not booting, Dom0 "xm dmesg" reporting the same error. As it's
working with both patches applied, should I try to test with only Ian's
patch (for arch/x86/xen/enlighten.c) applied?

In any case, feel free to add:

Tested-by: Christian Kujau <lists@nerdbynature.de>

Thanks so much for your efforts to everyone involved!

Christian.
--
BOFH excuse #436:

Daemon escaped from pentagram


\
 
 \ /
  Last update: 2010-01-15 09:41    [W:0.095 / U:0.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site