Hi, I have a xen 3 installation which I want to upgrade to a xen-pae installation. What do I have to replace? Only xen.gzand the kernel, or the xen tools, too? I would like to have a quick fallback, if the box becomes unstable. Thanks in advance, Johnny -- jabber:johnny@wh-netz.de _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Petersson, Mats
2006-Feb-09 13:56 UTC
[Xen-users] RE: [Xen-devel] moving from xen to xen-pae
> -----Original Message----- > From: xen-devel-bounces@lists.xensource.com > [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of > Hans-Christian Armingeon > Sent: 09 February 2006 11:05 > To: xen-devel@lists.xensource.com; xen-users@lists.xensource.com > Subject: [Xen-devel] moving from xen to xen-pae > > Hi, > > I have a xen 3 installation which I want to upgrade to a > xen-pae installation. > > What do I have to replace? Only xen.gzand the kernel, or the > xen tools, too?I believe the tools are fine and understand PAE or non-PAE without change. For example, .../tools/libxc/xc_ptrace.c uses the processor type to determine if it''s PAE or not at runtime in map_domain_va, and if it is PAE calls map_domain_va_pae instead. There is a dependency on CONFIG_X86_PAE in .../tools/libxc/xen/arch-x86_32.h, but it seems that the choice made based on this is not used anywhere in the libxc source files. It''s probably just a side-effect of this file being shared between Xen itself and the libxc directories. Of course, you probably want to add a second entry in your grub.conf like this: title Xen-pae kernel /boot/xen-pae.gz module /boot/vmlinuz-pae-xen0 ... Then you should be able to just boot back into the old, working Xen-kernel. -- Mats> > I would like to have a quick fallback, if the box becomes unstable. > > Thanks in advance, > > Johnny > -- > jabber:johnny@wh-netz.de > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Am Donnerstag, 9. Februar 2006 14:56 schrieb Petersson, Mats:> [...] > Of course, you probably want to add a second entry in your grub.conf > like this: > > title Xen-pae > kernel /boot/xen-pae.gz > module /boot/vmlinuz-pae-xen0 > ... > Then you should be able to just boot back into the old, working > Xen-kernel.That is exactly what I wanted :-) Thank you, Johnny> > -- > Mats > > > > I would like to have a quick fallback, if the box becomes unstable. > > > > Thanks in advance, > > > > Johnny > > -- > > jabber:johnny@wh-netz.de > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@lists.xensource.com > > http://lists.xensource.com/xen-devel > > > > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >-- jabber:johnny@wh-netz.de _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel