pradeep singh rautela
2007-Aug-17 09:24 UTC
[Xen-devel] [Q]Xen 3.1 kernel config surprises!!
Hi All, [ First, the reason i resorted to doing this is because default dom0 and xen panic pretty soon :-/. ] I tried shifting to Xen-3.1 but i must admit i was stumbled and surprised to see some changes which are bothering me from last 4 days. First the moment i do a $make linux-2.6-xen CONFIGMODE=menuconfig it prompts me all well. I do my changes and do make xen to install the hypervisor. Well and good till here. I decided to compile a custom dom0 and domU kernels. I did at the root xen-3.1 src tree $make linux-2.6-xen0 CONFIGMODE=menuconfig i made changes. Now i did $make linux-2.6-xenU CONFIGMODE=menuconfig and made further changes. Suddenly i thought of changing something in xenU and xen0 configs but the config seems to be lost :-/, forcing me to the same spot from where i started. Sorry but i thought kernel config is supposed to be saved on exit from menuconfig and not vanished. Did i miss something silly? [OTOH why should the above commands totally erase the existing .config? .... can''t they just check if a .config exists and if it does, make Xen/dom0/domU specific changes which are absolutely necessary and leave rest of entries intact] BTW i can''t use a saved .config in any way to generate xen,dom0 or domU for that matterr. Why? I tried copying my custom config file to buidlconfigs dir, to replace the default ones for xen, xenU and xen0 for x86_32 but still not luck :-(. Previous versions looked charm to work with when it came to kernel recompilation. Can anyone point me to appropriate link or howto ? Or give me a hint on what am i missing here? Machine info :- Intel Pentium D 2.8 Ghz. No VT-x. uname -a : Linux blufox 2.6.23-rc2-lguest #1 SMP PREEMPT Mon Aug 6 14:29:49 IST 2007 i686 GNU/Linux Box is an Ubuntu work machine. Thanks --pradeep -- -- pradeep singh rautela "Genius is 1% inspiration, and 99% perspiration" - not me :) _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Fri, 2007-08-17 at 14:54 +0530, pradeep singh rautela wrote:> Sorry but i thought kernel config is supposed to be saved on exit from > menuconfig and not vanished. Did i miss something silly?No, this seems to have been broken when the kernel was upgraded to 2.6.18 (i.e. frickin'' ages ago!). It seems that "make oldconfig" doesn''t create include/linux/autoconf.h anymore and that "make silentoldconfig" is required instead. We use include/linux/autoconfig.h as the makefile stamp to indicate whether to write an initial configuration or not. Can you try http://xenbits.xensource.com/staging/xen-unstable.hg?rev/ae923d1f50bf Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
pradeep singh rautela
2007-Aug-17 12:47 UTC
Re: [Xen-devel] [Q]Xen 3.1 kernel config surprises!!
On 8/17/07, Ian Campbell <Ian.Campbell@xensource.com> wrote:> On Fri, 2007-08-17 at 14:54 +0530, pradeep singh rautela wrote:[snip]> > No, this seems to have been broken when the kernel was upgraded to > 2.6.18 (i.e. frickin'' ages ago!). It seems that "make oldconfig" doesn''t > create include/linux/autoconf.h anymore and that "make silentoldconfig" > is required instead. We use include/linux/autoconfig.h as the makefile > stamp to indicate whether to write an initial configuration or not. > > Can you try > http://xenbits.xensource.com/staging/xen-unstable.hg?rev/ae923d1f50bfSure Ian. How much does this affects xen-3.1 release? thanks Ian. --pradeep> > Ian. > > >-- -- pradeep singh rautela "Genius is 1% inspiration, and 99% perspiration" - not me :) _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
At 13:47 17/08/2007, pradeep singh rautela wrote:>On 8/17/07, Ian Campbell <Ian.Campbell@xensource.com> wrote: > > On Fri, 2007-08-17 at 14:54 +0530, pradeep singh rautela wrote: >[snip] > > > > No, this seems to have been broken when the kernel was upgraded to > > 2.6.18 (i.e. frickin'' ages ago!). It seems that "make oldconfig" doesn''t > > create include/linux/autoconf.h anymore and that "make silentoldconfig" > > is required instead. We use include/linux/autoconfig.h as the makefile > > stamp to indicate whether to write an initial configuration or not. > > > > Can you try > > http://xenbits.xensource.com/staging/xen-unstable.hg?rev/ae923d1f50bf >Sure Ian. >How much does this affects xen-3.1 release?Do you mean "how does this affect the binaries released by XenSource"? Probably not at all. If you mean, how do I apply this to 3.1, just copy the content of that patch into a file (say in a file called "fixbuild.patch" in your home directory), then go to your xen 3.1 tree and do "patch -p 1 < ~/fix-build.patch". It should apply without much fuss. -- Mats>thanks Ian. >--pradeep > > > > Ian. > > > > > > > > >-- >-- >pradeep singh rautela > >"Genius is 1% inspiration, and 99% perspiration" - not me :) > >_______________________________________________ >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