On 09/08/2013 04:19 PM, Bastian Blank wrote: > On Wed, Aug 28, 2013 at 11:53:58PM +0200, Helge Deller wrote: >> On 08/28/2013 11:35 PM, Bastian Blank wrote: >>> Looks reasonable. But please send further changes to remove the >>> non-smp kernels. >> I can do that. Do you have some background on this request for me? >> Is it policy that you only want to gave SMP-kernels? > > We like to lower the image count. As long as there are no pressing > needs, we like to only have one kernel variant.
Ok. > Are there any UP machines since PA-8800? After the request to reduce the kernels to e.g. SMP-only, my thought was to provide only 32bit-UP and 64bit SMP kernels. To be sure I asked on the parisc mailing list. The whole thread can be read here: http://comments.gmane.org/gmane.linux.ports.parisc/5283 Summary: - yes, there exists quite some 32bit-only parisc SMP machines. - the J5600 is SMP capable in both 32bit and 64bit mode, but currently it only boots Linux with a 32bit SMP kernel and crashes with a 64bit SMP kernel. We are working on resolving this... - 64bit SMP kernel boots fine on a 64bit UP machine. So, theretically we can drop the 64bit UP kernel. Only problem: performance loss due to unnecessary spinlock cost. So, right now, the best option would be to only drop the 64bit UP kernel. >>>> PPPS: CONFIG_MLONGCALLS=y is necessary since the built kernel >>>> otherwise gets too big so that jumps can't be reached. >>> Are there drawbacks? >> Yes, it might be a little bit slower since the jumps now have one >> CPU instruction more. But there is no other way to solve it unless >> we drop some unneccessary kernel options for parisc. > > How much space would be needed? Some Arm configs disable SELinux > for example to save space. Not much. I think it makes sense to look through the complete configs again. Maybe there are things which we can disable for parisc... Helge -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/522cdd93.7080...@gmx.de
