Hi Sunil, On Fri, Sep 8, 2017 at 5:20 PM, Sunil Kumar <sukumar at mvista.com> wrote: > Hi , > > Thanks for replying Pratyush. > > I have also seen the zImage support is present for the ppc64, earlier > my plan was to take this source as reference and port it for ppc. > But in zImage_ppc64_usage() its clearly written that "zImage support > is still broken", which stop me. > > Is the zImage for ppc64 working properly ? Should I trust this ? > > Asking this because I don't have hardware to test for ppc64. > > If anyone else used the ppc64 zImage as secondary kernel. please > provide your inputs here. I was recently experimenting with the kexec zImage support for both ppc/ppc64 systems, but I do not find it working reliably on ppc64 on Power8 machines as well. I am looking to work on a fix for the ppc64 zImage support first (since I have real hardware to test the same on) and also looking to extend it to ppc32 (for which I have only qemu systems to test on). I plan to share a RFC patchset in a week or so and would need your help to test it on ppc32 boards like the p2020. Regards, Bhupesh > > On Fri, Sep 8, 2017 at 8:58 AM, Pratyush Anand <panand at redhat.com> wrote: >> >> >> On Thursday 07 September 2017 01:49 PM, Sunil Kumar wrote: >>> >>> $ kexec -e >>> >>> As the zImage is also and elf file format, but the control is not >>> getting transferred to the zImage. >>> I can see kexec is able to load all the segments properly, but looks >>> like its not able to figure out the entry point to start execution >>> with zImage. >>> >>> ------------------------------------------------------------------------------------------------------------------------------------------------------- >>> kexec_load: entry = 0x329678 flags = 0x0 >>> >>> ------------------------------------------------------------------------------------------------------------------------------------------------------- >>> >>> On the same board (i.e. Freescale p2020ds), uImage and vmlinux works fine. >> >> >> Looking into upstream code: ppc has only support of elf and uImage,and so >> they work. >> >>> >>> Just curious to know , why the zImage support is still not provided in >>> the kexec for ppc ?? >> >> >> Probably because no one needed it till now. >> >>> Is there any restriction from kexec design point of view ? >> >> >> I do not think. You can write a patch. I see, ppc64 has zImage support, so >> you can take that as example and can write code for ppc as well. >> >> -- >> Regards >> Pratyush > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec
